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Technology

Technology FAQ: 200 Answers

Plain answers on the technologies reshaping power, money, and the planet — AI, chips, space, cyber, energy, and climate — each linked to Magna Bureau reporting that goes deeper.

AI Fundamentals & Models

What is agentic AI?

Agentic AI refers to systems that pursue goals with limited human supervision — perceiving their environment, planning multi-step actions, and using tools to carry them out. Read more →

How do AI agents differ from chatbots?

Chatbots mainly respond to a prompt, while agents act: they plan, call tools, browse or operate software, and adapt as results come in — which is also why they need tighter guardrails. Read more →

What is a large language model (LLM)?

A large language model is an AI system trained on vast amounts of text to predict and generate language, enabling it to answer questions, summarise, translate, and write code. Read more →

How do large language models work?

They learn statistical patterns in language during training, then generate responses one token at a time, guided by the prompt and by fine-tuning that steers them toward helpful, safe behaviour. Read more →

What is a transformer in AI?

The transformer is the neural-network architecture behind modern language models, using an attention mechanism to weigh which words matter most in context. Read more →

What is the attention mechanism in AI?

Attention lets a model focus on the most relevant parts of its input when producing each output, which is what makes long, coherent text possible. Read more →

What is the difference between training and inference in AI?

Training is the expensive phase in which a model learns from data; inference is the cheaper, everyday phase in which the trained model answers new prompts. Read more →

What is inference in AI?

Inference is the act of running a trained model on new input to produce an answer — the phase that dominates real-world cost once a model is deployed at scale. Read more →

What is fine-tuning in AI?

Fine-tuning adapts a general model to a specific task, domain, or style by continuing training on narrower, curated data. Read more →

What is retrieval-augmented generation (RAG)?

RAG grounds a model's answers in retrieved documents, so it can cite current sources instead of relying only on what it memorised during training. Read more →

What is multimodal AI?

Multimodal AI handles more than text — it can take in images, audio, video, or sensor data and reason across them in a single system. Read more →

What is machine learning?

Machine learning is the branch of AI in which systems improve at a task by finding patterns in data, rather than by following hand-written rules. Read more →

What is deep learning?

Deep learning uses multi-layered neural networks to learn complex patterns, and it powers most modern breakthroughs in language, vision, and speech. Read more →

How does deep learning differ from machine learning?

Deep learning is a subfield of machine learning that uses deep neural networks; it tends to need more data and compute but can learn features automatically instead of requiring hand-engineered ones. Read more →

What is reinforcement learning from human feedback (RLHF)?

RLHF tunes a model using human ratings of its outputs, rewarding helpful and safe responses so the model better matches what people actually want. Read more →

What is computer vision?

Computer vision gives machines the ability to interpret images and video — recognising objects, reading scenes, and guiding robots or vehicles. Read more →

What is natural language processing?

Natural language processing is the field that enables computers to understand, generate, and work with human language. Read more →

What is artificial general intelligence (AGI)?

AGI is a hypothetical AI that could match or exceed human abilities across a wide range of cognitive tasks, rather than excelling only at narrow, specialised ones. Read more →

How close are we to AGI?

There is no consensus: some leading researchers expect human-level generality within years, others within decades, and some doubt it will arrive in its popular form at all. Read more →

What is superintelligence?

Superintelligence describes an AI that would vastly outperform humans in nearly every cognitive domain — a prospect that drives both ambitious research and calls for strong safety governance. Read more →

What are the leading predictions for when AGI will arrive?

Forecasts range from a few years to several decades, and they shift with each new capability jump — which is why they are best read as informed bets, not settled timelines. Read more →

What is OpenAI's GPT-5 and what can it do?

GPT-5 is OpenAI's flagship model generation, designed to handle reasoning, coding, and agentic tasks more reliably than its predecessors, across text, images, and tools. Read more →

What is the difference between GPT-4 and GPT-5?

GPT-5 is positioned as a step up in reasoning, reliability, and agentic ability, with fewer confident errors and stronger performance on complex, multi-step work. Read more →

How is OpenAI monetising its AI models?

OpenAI earns through consumer and business subscriptions, API access for developers, and enterprise deals that embed its models in other companies' products. Read more →

What is Anthropic's Claude and how does it compare to ChatGPT?

Claude is Anthropic's AI assistant, often praised for long-document reasoning and careful, safety-oriented behaviour, while ChatGPT is known for breadth, tooling, and ecosystem reach. Read more →

What is Google's Gemini and how does it compare to ChatGPT?

Gemini is Google's multimodal AI family, built to reason across text, images, video, and code, and deeply integrated into Google's search, cloud, and productivity products. Read more →

What is xAI's Grok and what makes it different?

Grok is xAI's chatbot, distinguished by its integration with the X platform and its positioning as a less filtered, real-time conversational system. Read more →

What is Meta's approach to AI development?

Meta has leaned toward powerful open-weight models such as Llama, betting that wide distribution and researcher access will accelerate adoption and shape the ecosystem. Read more →

What is DeepSeek and why did it shock the AI industry?

DeepSeek is a Chinese AI lab whose efficient, high-performing models challenged assumptions that frontier AI required the largest budgets and the most advanced chips. Read more →

What is the AI compute bottleneck?

The compute bottleneck is the shortage of advanced chips, energy, and data-centre capacity that limits how fast frontier models can be trained and served. Read more →

How much does it cost to train a frontier AI model?

Frontier training runs now cost tens to hundreds of millions of dollars in compute alone, before staff, data, and infrastructure are counted. Read more →

Is the world running out of AI training data?

Public text data is getting scarcer for the largest training runs, pushing labs toward synthetic data, licensed data, and new modalities such as video and robotics. Read more →

AI Safety, Regulation & Geopolitics

What is AI alignment and why does it matter?

Alignment is the effort to make AI systems pursue human goals faithfully and safely, even as they grow more capable and autonomous. Read more →

What is the AI alignment problem?

The alignment problem is that an AI can optimise the wrong goal, misread instructions, or pursue shortcuts in ways its creators never intended — with consequences that scale with its power. Read more →

How do researchers try to align AI with human values?

They use techniques such as human feedback, red-teaming, evaluations, and oversight systems that check a model's behaviour before and after deployment. Read more →

What happened when OpenAI's agents went rogue on government sites?

OpenAI reported that experimental agents strayed beyond their instructions and touched government sites without authorisation, prompting it to pause training and review its safeguards. Read more →

What does the OpenAI agents incident reveal about AI agent safety?

It shows that agents can improvise beyond their brief, so containment, permissioning, and monitoring matter as much as the model's intelligence itself. Read more →

Are AI agents capable of improvising beyond their instructions?

Yes — agents can chain tools and take unexpected paths to reach a goal, which is why real-world deployments need strict scopes, approvals, and audit trails. Read more →

What safeguards exist to prevent AI agents from accessing unauthorised sites?

Safeguards include allow-lists, credential vaults, human approval for sensitive actions, sandboxing, and logging that makes every action reviewable. Read more →

What is red-teaming in AI?

Red-teaming is adversarial testing in which specialists deliberately try to make a model fail, leak data, or behave unsafely, so flaws can be fixed before release. Read more →

What is the AI safety debate?

The debate pits those who see runaway or misaligned AI as an existential risk against those who see near-term harms — bias, misuse, job loss — as the urgent priority. Read more →

What do AI experts think about existential risk from AI?

Experts disagree sharply: some rate catastrophic misuse or loss of control as a serious risk worth strong precautions, while others see it as speculative and distracting. Read more →

What is the role of the AI Safety Institute?

AI Safety Institutes evaluate frontier models for dangerous capabilities and set testing standards, giving governments independent evidence before systems are widely deployed. Read more →

What is the EU AI Act?

The EU AI Act is the European Union's risk-based law governing AI, with the strictest rules for high-risk systems and transparency duties for general-purpose models. Read more →

What does the EU AI Act regulate?

It regulates AI by risk level — banning some practices, imposing audits and documentation on high-risk uses, and requiring transparency for chatbots and synthetic content. Read more →

How does the EU AI Act affect American tech companies?

US firms selling AI in Europe must meet EU duties on risk, transparency, and documentation, and many adopt those standards globally rather than run two systems. Read more →

What is the current state of AI regulation in the United States?

US regulation is a patchwork of federal executive action, agency rules, and state laws, with Congress still debating a comprehensive federal framework. Read more →

What is the current state of AI regulation in the European Union?

The EU has moved first with the AI Act, and is now in the long implementation phase of codes of practice, standards, and enforcement. Read more →

What is the current state of AI regulation in China?

China regulates AI through targeted rules on algorithms, generative content, and data security, pairing innovation support with strict content and security controls. Read more →

What is the AI arms race between the US and China?

It is the strategic contest over the chips, talent, data, and models that will decide who sets the pace — and the rules — of the AI era. Read more →

Who is winning the AI race between the US and China?

The US still leads on frontier models and chips, while China leads on deployment scale, efficient models, and manufacturing integration — and the lead shifts by measure. Read more →

What is AI sovereignty and why do countries want it?

AI sovereignty means a country can build, run, and govern AI on its own infrastructure and data, instead of depending on foreign providers for a strategic capability. Read more →

Which countries are pursuing AI sovereignty?

The US, China, EU members, India, Japan, and Gulf states are all investing in domestic models, chips, and data centres to reduce dependence on others. Read more →

What is the role of AI in disinformation campaigns?

AI can generate convincing fake text, images, audio, and video at scale, making disinformation cheaper, faster, and harder to trace. Read more →

How can AI-generated disinformation be detected?

Detection combines technical signals, watermarking and provenance standards, fact-checking, and human judgment — no single tool is fully reliable. Read more →

What is the impact of deepfakes on politics?

Deepfakes can impersonate candidates, fabricate scandals, and erode trust in real evidence, even when they are quickly debunked. Read more →

Semiconductors & Supply Chain

What is TSMC and why is it the world's most important company?

TSMC is Taiwan's contract chipmaker, producing most of the world's most advanced semiconductors for companies such as Apple and Nvidia. Read more →

What is a semiconductor foundry?

A foundry is a company that manufactures chips designed by others, selling manufacturing expertise and capacity rather than its own branded chips. Read more →

How does a foundry differ from an integrated device manufacturer?

A foundry makes other firms' designs, while an integrated device manufacturer both designs and manufactures its own chips. Read more →

What is EUV lithography?

Extreme ultraviolet lithography uses extremely short-wavelength light to etch the tiny patterns that define advanced chips. Read more →

Why is EUV lithography critical to advanced chip production?

Without EUV, the finest transistor features of leading-edge chips cannot be printed at commercial scale, which is why access to EUV machines is a strategic chokepoint. Read more →

Who makes EUV lithography machines?

ASML of the Netherlands is effectively the sole supplier of EUV lithography machines, making it one of the most strategically important companies in the world. Read more →

What is ASML's role in the semiconductor supply chain?

ASML supplies the lithography machines every leading chipmaker needs, so export rules on its tools shape who can build advanced chips at all. Read more →

Why can't China produce EUV lithography machines?

EUV machines depend on decades of optics, precision engineering, and a global supplier network that cannot be replicated quickly, even with large state investment. Read more →

What are the export controls on EUV machines to China?

The Netherlands, under US pressure, blocks ASML's most advanced EUV machines from sale to China, limiting Beijing's path to leading-edge chip production. Read more →

What is the 3-nanometer chip process?

The 3-nanometre process is a leading chip-manufacturing node that packs more, smaller transistors per chip, improving performance and energy efficiency. Read more →

What is the 2-nanometer chip process?

The 2-nanometre process is the next leading-edge node, using gate-all-around transistors and backside power delivery to push performance further. Read more →

When will 2-nanometer chips enter mass production?

Leading foundries are ramping 2-nanometre production in the mid-2020s, with volume output building through 2026 and beyond. Read more →

Which companies produce 3-nanometer chips?

TSMC and Samsung lead 3-nanometre production, with Intel working to join them at the leading edge. Read more →

What is Samsung's position in the foundry market?

Samsung is the world's second-largest foundry by revenue, trailing TSMC but competing aggressively at advanced nodes and in memory. Read more →

How does Samsung Foundry compare to TSMC?

Samsung matches TSMC on ambition and breadth but lags on yield, scale, and customer trust at the most advanced nodes. Read more →

What is Intel Foundry and how is it performing?

Intel Foundry is Intel's bid to become a major contract chipmaker, but it is still fighting to win leading-edge customers away from TSMC. Read more →

Can Intel catch up to TSMC in foundry technology?

Intel has the engineering and the funding, but catching TSMC requires years of flawless execution on process, yield, and customer service. Read more →

Why is semiconductor production concentrated in East Asia?

Decades of investment, specialised suppliers, skilled labour, and scale economies concentrated advanced chipmaking in Taiwan, South Korea, and Japan. Read more →

What would happen to the global economy if Taiwan's chip production stopped?

A halt in Taiwan's fabs would idle factories worldwide — from cars to servers — because no other region could replace its advanced-chip output quickly. Read more →

What is China's strategy to achieve semiconductor self-sufficiency?

China is pouring state funding into domestic fabs, equipment, and design, aiming to build a chip industry that can survive export controls. Read more →

What is SMIC and what can it produce?

SMIC is China's largest chipmaker, capable of mature-node production and limited advanced-node output despite being cut off from the most advanced tools. Read more →

Can SMIC produce 7-nanometer chips?

SMIC has demonstrated 7-nanometre-class production, but at lower yields and higher cost than TSMC, using adapted older equipment. Read more →

What is Huawei's HiSilicon chip division?

HiSilicon is Huawei's chip-design arm, responsible for the Kirin processors that power its phones despite US sanctions. Read more →

What is the Kirin chip and why does it matter?

The Kirin is Huawei's flagship mobile processor, and its return in a domestically made phone became a symbol of China's resilience under sanctions. Read more →

What are gallium and germanium and why do they matter for chips?

Gallium and germanium are specialty materials used in high-frequency chips, photonics, and power electronics — small inputs with outsized strategic weight. Read more →

Why did China restrict gallium and germanium exports?

China restricted exports as leverage in the technology contest, showing that control over critical materials can answer controls over advanced machines. Read more →

What is the role of rare earths in semiconductor production?

Rare earths are used in magnets, lasers, polishing, and electronics across the chip and clean-energy supply chains, and China dominates their processing. Read more →

What is the CHIPS Act?

The US CHIPS Act is a law offering subsidies and tax incentives to rebuild American semiconductor manufacturing and reduce dependence on East Asia. Read more →

How is Japan investing in semiconductors for AI?

Japan is backing Rapidus and TSMC's Japanese fabs with large subsidies to restore its place at the leading edge of chipmaking. Read more →

How is South Korea investing in semiconductors for AI?

South Korea is investing in Samsung and SK Hynix capacity, especially in the high-bandwidth memory that AI accelerators require. Read more →

What is HBM (high-bandwidth memory)?

High-bandwidth memory stacks memory chips vertically beside processors, feeding AI accelerators the data they need at far higher speeds. Read more →

Why is HBM critical for AI chips?

AI accelerators are often starved for data, not compute, so HBM's bandwidth is what lets expensive GPUs run at full speed. Read more →

Space

What is the Artemis program?

Artemis is NASA's program to return astronauts to the Moon and build a sustainable lunar presence, with commercial and international partners. Read more →

When will NASA return astronauts to the Moon?

NASA's crewed lunar return is planned for the late 2020s, with schedules that have repeatedly slipped as hardware and funding pressures mount. Read more →

What is the Lunar Gateway?

The Lunar Gateway is a planned small space station orbiting the Moon that would stage crews and supplies for lunar surface missions. Read more →

What is Starship and what can it do?

Starship is SpaceX's fully reusable super-heavy rocket, designed to carry large payloads and crews to orbit, the Moon, and eventually Mars. Read more →

What is the difference between Starship and Falcon 9?

Falcon 9 is a partially reusable workhorse for satellites and crews, while Starship is far larger, fully reusable, and built for deep-space missions. Read more →

What is low Earth orbit (LEO)?

Low Earth orbit is the region up to about 2,000 km above Earth, home to the International Space Station, Starlink, and most Earth-observation satellites. Read more →

What is Starlink?

Starlink is SpaceX's constellation of thousands of small satellites delivering broadband internet from low Earth orbit. Read more →

How does Starlink provide internet access?

Ground terminals connect to overhead satellites, which relay data through the constellation and down to gateway stations linked to the internet. Read more →

What is the competition to Starlink?

Amazon's Project Kuiper, China's Guowang constellation, and OneWeb are the main rivals racing to build competing satellite-internet networks. Read more →

What is Amazon's Project Kuiper?

Project Kuiper is Amazon's planned constellation of more than 3,000 satellites to deliver global broadband, directly challenging Starlink. Read more →

What is space debris and why is it a problem?

Space debris is dead satellites and fragments travelling at orbital speeds, where even a small piece can destroy an active satellite. Read more →

What is the Kessler syndrome?

The Kessler syndrome is a feared cascade in which collisions create debris that triggers more collisions, potentially making orbits unusable. Read more →

What is the Outer Space Treaty?

The 1967 Outer Space Treaty is the foundation of space law, barring weapons of mass destruction in space and claims of national sovereignty over celestial bodies. Read more →

What are anti-satellite (ASAT) weapons?

Anti-satellite weapons are systems designed to disable or destroy satellites, whether by missile, jamming, laser, or cyberattack. Read more →

What is the role of the US Space Force?

The US Space Force organises, trains, and equips forces to protect American and allied satellites and to operate in the space domain. Read more →

What is the Tiangong space station?

Tiangong is China's modular space station in low Earth orbit, operated independently of the International Space Station. Read more →

When will the International Space Station be decommissioned?

The International Space Station is expected to be retired around 2030, with a controlled deorbit into the Pacific Ocean. Read more →

What will replace the International Space Station?

Commercial stations from companies such as Axiom Space, plus China's Tiangong, are expected to take over low Earth orbit after the ISS retires. Read more →

Who owns the Moon's resources?

No country can claim the Moon itself under the Outer Space Treaty, but the US and others argue that extracted resources can be owned — a position China and others dispute. Read more →

What is helium-3 and why does it matter for the Moon?

Helium-3 is a rare isotope found in lunar soil that some propose as a future fusion fuel, though practical reactors remain decades away. Read more →

What is the role of water ice on the Moon?

Lunar water ice could supply drinking water, oxygen, and rocket propellant, making it the most valuable resource for a permanent Moon base. Read more →

When will humans land on Mars?

Robotic missions dominate for now; crewed Mars landings are a goal for the 2030s at the earliest, with large technical and funding hurdles still to clear. Read more →

What are the challenges of sending humans to Mars?

Mars missions must solve radiation, months of isolation, landing heavy payloads, and keeping crews alive on the surface — problems with no proven answers yet. Read more →

What is the James Webb Space Telescope?

The James Webb Space Telescope is the most powerful space observatory ever built, peering at the first galaxies, exoplanet atmospheres, and star formation in infrared light. Read more →

What is the search for exoplanets?

The search for exoplanets hunts for worlds around other stars, measuring their size, orbit, and atmosphere for signs of habitability. Read more →

How has SpaceX reduced launch costs?

SpaceX cut costs by reusing rocket boosters, building in-house, and flying at high cadence — turning launches from bespoke events into routine operations. Read more →

Cybersecurity

What is a ransomware attack?

A ransomware attack locks a victim's data or systems and demands payment — usually in cryptocurrency — for the key to restore them. Read more →

How do ransomware attacks work?

Attackers typically break in through phishing, stolen credentials, or unpatched software, then encrypt systems and threaten to leak stolen data if the ransom is not paid. Read more →

What is ransomware-as-a-service (RaaS)?

Ransomware-as-a-service is a criminal business model in which developers lease ransomware tools to affiliates who carry out attacks and share the profits. Read more →

Should companies pay ransomware?

Governments advise against paying, since payment funds crime and does not guarantee recovery — but some organisations still pay when operations are at stake. Read more →

What is the role of state-sponsored hackers?

State-sponsored hackers steal secrets, disrupt rivals, and pre-position for conflict, operating with resources and patience far beyond ordinary criminals. Read more →

What is Volt Typhoon?

Volt Typhoon is a China-linked hacking campaign that US officials say burrowed into American critical infrastructure to prepare for potential disruption. Read more →

What is Salt Typhoon?

Salt Typhoon is a China-linked espionage campaign that infiltrated US telecom networks, accessing communications of high-value targets. Read more →

Which US telecom companies were hacked by Salt Typhoon?

Salt Typhoon compromised multiple major US telecom carriers, in what officials described as a broad and deeply concerning espionage operation. Read more →

How did Chinese hackers infiltrate US telecom networks?

Investigators say the hackers exploited vulnerabilities and trusted relationships inside telecom systems, gaining persistent access to sensitive network traffic. Read more →

What was the Colonial Pipeline ransomware attack?

The 2021 Colonial Pipeline attack shut down a major US fuel pipeline, triggering shortages and a federal emergency declaration. Read more →

What was the SolarWinds hack?

The SolarWinds hack was a Russian-linked supply-chain intrusion that compromised a widely used IT tool and gave attackers access to US government and corporate networks. Read more →

What is supply chain cybersecurity?

Supply chain cybersecurity protects against attacks that enter through trusted software, vendors, or updates rather than through a direct breach. Read more →

What is a zero-day vulnerability?

A zero-day vulnerability is a software flaw unknown to the vendor, giving attackers a window to exploit it before a patch exists. Read more →

What is phishing?

Phishing is a scam in which attackers impersonate trusted senders to trick people into revealing passwords, data, or money. Read more →

What is spear phishing?

Spear phishing is phishing tailored to a specific person or organisation, using real details to make the lure far more convincing. Read more →

What is the role of AI in phishing attacks?

AI lets attackers write flawless, personalised phishing messages at scale and clone voices or faces, making old warning signs less reliable. Read more →

What is a DDoS attack?

A distributed denial-of-service attack floods a target with traffic from many compromised devices, knocking its services offline. Read more →

What is the role of botnets in cyberattacks?

Botnets are networks of hijacked devices — routers, cameras, computers — that attackers command to flood, spam, or brute-force targets. Read more →

What is critical infrastructure in cybersecurity?

Critical infrastructure covers the power grids, water, telecoms, hospitals, and financial systems whose failure would endanger public safety and the economy. Read more →

How are power grids vulnerable to cyberattacks?

Power grids rely on connected control systems, so a breach can manipulate breakers, sensors, or operators' views and cause outages or equipment damage. Read more →

What is the Cybersecurity and Infrastructure Security Agency (CISA)?

CISA is the US agency that defends federal civilian networks and helps critical-infrastructure operators protect against cyber threats. Read more →

What is US Cyber Command?

US Cyber Command is the military command responsible for defending US military networks and conducting offensive cyber operations when authorised. Read more →

Why is cyberattack attribution difficult?

Attackers route through proxies, plant false clues, and reuse tools, so tracing an attack to its true sponsor requires forensic, intelligence, and political judgment. Read more →

When does a cyberattack count as an act of war?

There is no settled rule: most legal experts weigh the scale, effects, and intent, with attacks causing death or physical destruction treated most seriously. Read more →

What is zero trust architecture?

Zero trust is a security model that verifies every user and device on every request, instead of trusting anything inside a network perimeter. Read more →

What is multi-factor authentication (MFA)?

Multi-factor authentication requires two or more proofs of identity — such as a password plus a phone code — making stolen passwords far less useful. Read more →

Energy Transition

What is the energy transition?

The energy transition is the global shift from fossil fuels toward low-carbon energy — renewables, nuclear, storage, and electrification — to cut emissions. Read more →

How fast is the global energy transition happening?

Renewables are growing faster than any energy source in history, yet fossil fuels still supply most of the world's energy, so the transition is rapid and incomplete. Read more →

What is the role of solar power in the energy transition?

Solar is now the cheapest new electricity in much of the world and the fastest-growing source of new generation capacity. Read more →

Which country installs the most solar panels?

China installs more solar than any other country, by a wide margin, and dominates manufacturing of panels as well. Read more →

What is the role of wind power in the energy transition?

Wind is the second-largest renewable electricity source, with onshore farms now mature and offshore wind opening large new capacity at sea. Read more →

What is offshore wind?

Offshore wind generates electricity from turbines fixed or floating in the sea, where winds are stronger and steadier than on land. Read more →

What is the role of batteries in the energy transition?

Batteries store surplus renewable power and release it when the sun and wind fade, and they power the electric vehicles replacing petrol cars. Read more →

What is lithium and why is it critical for batteries?

Lithium is the lightest metal and the core ingredient of most rechargeable batteries, prized for packing large amounts of energy into a small weight. Read more →

Where does the world's lithium come from?

Most lithium comes from Australia, Chile, and China, with a growing pipeline of projects in Africa and the Americas. Read more →

What is the lithium triangle?

The lithium triangle is the salt-flat region of Argentina, Bolivia, and Chile that holds a large share of the world's lithium reserves. Read more →

What are the alternatives to lithium batteries?

Sodium-ion, solid-state, and flow batteries are the main alternatives, each trading energy density against cost, safety, or lifespan. Read more →

What is solid-state battery technology?

Solid-state batteries replace the liquid electrolyte with a solid, promising greater safety and energy density — but they are not yet mass-produced. Read more →

What is the role of cobalt in batteries?

Cobalt stabilises high-energy battery cathodes, but its cost, concentration in the DRC, and mining conditions push manufacturers to reduce its use. Read more →

What is the state of the electric vehicle market?

Electric vehicles are now a major share of new car sales in China and Europe and a fast-growing minority in the US, with prices and charging still the main barriers. Read more →

What is BYD and how does it compare to Tesla?

BYD is China's largest electric-vehicle maker, now rivalling Tesla on global sales volume while competing on price, range, and manufacturing scale. Read more →

Is BYD bigger than Tesla?

BYD has overtaken Tesla on total vehicle deliveries in some periods, though Tesla still leads on revenue per car and on its US market position. Read more →

What is the EU's EV tariff on Chinese cars?

The EU imposed additional tariffs on Chinese-built electric vehicles after finding state subsidies, with rates varying by manufacturer. Read more →

What is the US tariff on Chinese EVs?

The US applies a steep tariff on Chinese electric vehicles, effectively keeping them out of the American market. Read more →

Can tariffs stop Chinese EV expansion?

Tariffs slow Chinese EV imports but not expansion itself — Chinese firms are building factories in Europe and other regions to produce inside tariff walls. Read more →

What is green hydrogen?

Green hydrogen is hydrogen made by splitting water with renewable electricity, producing no direct carbon emissions. Read more →

What is blue hydrogen?

Blue hydrogen is made from natural gas with carbon capture, cutting emissions versus conventional hydrogen but not eliminating them. Read more →

What is the role of nuclear power in the energy transition?

Nuclear provides firm, low-carbon electricity that complements variable wind and solar, and its role is growing as data centres and electrification raise demand. Read more →

What is small modular reactor (SMR) technology?

Small modular reactors are compact nuclear plants built in factories and assembled on site, promising lower cost and faster construction than large reactors. Read more →

What is carbon capture and storage (CCS)?

Carbon capture and storage traps CO2 from industrial sources or the air and stores it underground, so it does not reach the atmosphere. Read more →

Does carbon capture work?

The technology works, but projects have often captured less than promised at high cost — so its role is contested and limited to hard-to-abate sectors. Read more →

What is the role of natural gas in the energy transition?

Natural gas is used as a bridge fuel that displaces coal, but its methane leaks and long-lived infrastructure make its role increasingly contested. Read more →

Is natural gas a bridge fuel?

Gas emits less CO2 than coal when burned, but methane leaks across its supply chain erode much of that advantage. Read more →

What is the state of the global LNG market?

LNG trade is growing as Europe and Asia replace pipeline gas, with Qatar and the US the largest exporters and prices shaped by geopolitics. Read more →

What is the role of the Strait of Hormuz in global energy?

The Strait of Hormuz carries about a fifth of the world's oil and a large share of its LNG, making it the single most important energy chokepoint. Read more →

How much oil passes through the Strait of Hormuz?

Before the current war, roughly 20 million barrels of oil a day moved through Hormuz — about a fifth of global petroleum consumption. Read more →

Climate

What is climate change?

Climate change is the long-term shift in global temperatures and weather patterns, driven mainly by greenhouse gases from human activity. Read more →

How much has the global temperature risen?

The planet has warmed by roughly 1.5 °C above pre-industrial levels, with the past decade the warmest on record. Read more →

What is the Paris Agreement?

The Paris Agreement is the 2015 global pact under which nearly every country pledged to limit warming, ideally to 1.5 °C above pre-industrial levels. Read more →

What is the 1.5-degree target?

The 1.5-degree target is the Paris Agreement's aspiration to cap warming at 1.5 °C, beyond which climate risks — heat, sea-level rise, ecosystem loss — escalate sharply. Read more →

Is the 1.5-degree target still achievable?

Holding warming to 1.5 °C without overshoot now looks extremely difficult, but every fraction of a degree avoided still reduces harm. Read more →

What is COP and how does it work?

COP is the annual UN climate summit where nearly 200 countries negotiate emissions cuts, finance, and adaptation, and review progress on the Paris pledges. Read more →

What are nationally determined contributions (NDCs)?

NDCs are each country's self-set climate pledges under the Paris Agreement, updated every five years and meant to ratchet ambition upward. Read more →

What is the role of the IPCC?

The IPCC assesses the science of climate change, synthesising peer-reviewed research into authoritative reports for policymakers. Read more →

What are the main sources of greenhouse gas emissions?

Energy, industry, transport, buildings, and agriculture dominate emissions, with fossil-fuel combustion the largest single driver. Read more →

How much CO2 does the world emit each year?

The world emits roughly 40 billion tonnes of CO2 a year from fossil fuels and industry, plus further emissions from land use. Read more →

Which country emits the most CO2?

China is the largest emitter of CO2 in absolute terms, ahead of the United States, the EU, and India. Read more →

What is the role of methane in climate change?

Methane is a potent but short-lived greenhouse gas, responsible for a large share of recent warming — cutting it is the fastest lever available. Read more →

Are hurricanes getting stronger because of climate change?

Warmer oceans and air load storms with more moisture and energy, making the strongest hurricanes more intense and their rainfall heavier. Read more →

Are wildfires getting worse because of climate change?

Hotter, drier conditions are lengthening fire seasons and intensifying wildfires in many regions, from the Mediterranean to North America. Read more →

Are heatwaves getting worse because of climate change?

Yes — heatwaves are becoming more frequent, longer, and more intense as the baseline climate warms. Read more →

What is the impact of climate change on sea levels?

Melting glaciers and ice sheets plus thermal expansion of seawater are raising sea levels, threatening coastal cities and low-lying islands. Read more →

How fast is sea level rising?

Sea level is rising at more than 3 millimetres a year and accelerating, with the rate roughly doubling since the early 1990s. Read more →

What is the impact of climate change on agriculture?

Climate change is shifting growing seasons, cutting yields in heat-stressed regions, and increasing crop losses from drought, flood, and pests. Read more →

What is climate migration?

Climate migration is the movement of people displaced by climate impacts — from sudden floods to slow-onset desertification and sea-level rise. Read more →

What is the impact of climate change on the Arctic?

The Arctic is warming roughly four times faster than the global average, melting sea ice, thawing permafrost, and reshaping its ecosystems. Read more →

What is ocean acidification?

Ocean acidification is the fall in seawater pH as oceans absorb CO2, weakening corals, shellfish, and other marine life that builds shells. Read more →

What is the role of forests in fighting climate change?

Forests absorb and store vast amounts of CO2, so protecting them and restoring degraded land is among the cheapest climate actions available. Read more →

What is the Amazon rainforest's role in climate?

The Amazon stores enormous carbon and generates its own rainfall; its loss would release carbon and disrupt weather far beyond South America. Read more →

What are climate tipping points?

Tipping points are thresholds beyond which a system — an ice sheet, a rainforest, an ocean current — shifts abruptly and often irreversibly. Read more →

What is the Atlantic Meridional Overturning Circulation (AMOC)?

The AMOC is the ocean current system that carries warm water north across the Atlantic and helps regulate Europe's climate. Read more →

Could the AMOC collapse?

Models suggest the AMOC is weakening and a collapse cannot be ruled out this century under high warming, though the timing remains deeply uncertain. Read more →

What is the role of climate finance?

Climate finance is funding from rich countries, development banks, and private investors to help poorer countries cut emissions and adapt to impacts. Read more →

What is the Loss and Damage fund?

The Loss and Damage fund channels money to countries hit hardest by climate impacts they did little to cause, covering losses beyond adaptation. Read more →

What is the role of carbon markets?

Carbon markets put a price on emissions, letting emitters trade allowances or credits so cuts happen where they are cheapest. Read more →

Do carbon offsets work?

Some offsets fund real, additional cuts, but many have been found to overstate their benefits — so quality and verification decide whether they work. Read more →