Photos and letters show how James Watson and Francis Crick raced to uncover the double helix structure of DNA.

Animation of DNA’s knot-like i-motif structure the team mapped in 50,000 locations in the human genome, concentrated in key functional areas including regions that control gene activity Credit ...

DNA isn't just a long string of genetic code, but an intricate 3D structure folded inside each cell. That means the tools ...

Here's NPR correspondent Joe Palca, from a 1993 broadcast, to commemorate the anniversary of the discovery of the structure of DNA. Sponsor Message : [POST-BROADCAST CLARIFICATION: This story, ...