For the first time, scientists have witnessed the very moment DNA begins to unravel, revealing a necessary molecular event for DNA to be the molecule that codes all life.

NOVA is the most popular primetime science series on American television, demystifying the scientific and technological concepts that shape and define our lives, our planet, and our universe.

He said his main reason for writing The Double Helix was to interest young people in science. "When I was young I much preferred to read fiction," he said, "So I decided to make The Double Helix ...