Earlier this month NPR health correspondent Rob Stein introduced us to Victoria Gray, the woman at the center of a groundbreaking medical treatment using CRISPR, the gene-editing technique.

This week, Rob reports exclusively for NPR on the first results of that closely-watched experiment.

This episode was produced by Brent Baughman and edited by Viet Le.

Short Wave Podcast

It’s science for everyone, using a lot of creativity and a little humor. Join host Maddie Sofia for science on a different wavelength.