The double helix cracked the code of life — and repaired science’s most famous omission. DNA, Rosalind Franklin’s Photo 51, and the genome age.
The secret of secrets was a photograph — a blurry X of dark bands, taken in a London basement, that turned out to be the blueprint of every living thing. DNA is the code this series has chased since fire: the instruction set that writes forests, whales, and you.