The discovery of the structure of DNA was one of the most important scientific achievements in human history. The now-famous double helix is almost synonymous with Watson and Crick, two of the scientists who won the Nobel prize for figuring it out. But there’s another name you may not know: Rosalind Franklin.

This video from TED-Ed by Cláudio L. Guerra, tells the story of the brave and pioneering woman who fought sexism in science, and whose work revolutionized medicine, biology, and agriculture. “It’s time to honor Rosalind Elsie Franklin, the unsung mother of the double helix.”