What if we could rewrite the code of life—just like editing a Word doc?

Gene-editing pioneer David Liu takes us behind the scenes of the revolutionary tools transforming medicine. He’s the Harvard scientist who invented base editing—a breakthrough that lets scientists fix a single DNA letter to correct genetic disease at its root.

This is science fiction come to life—and it's happening now. He edits DNA like we edit text. 

Come meet the man who's changing lives, one letter at a time.