Science

First baby born to U.S. uterus transplant patient raises ethics questions
A woman who received a uterus transplant recently delivered a healthy baby boy. NPR's Mary Louise Kelly talks with the doctors working on the experiment about its ethics, risk, and cost implications.
'The Invention of Race'
"The Invention of Race." How, why and when was the notion of "race" developed? This special explores the construction of race, and racism, from the ancient world to today.
YouTube faces increased criticism that it's unsafe for kids
Many videos on the site feature popular characters in upsetting and violent situations, and some videos of children have attracted pedophilic comments. YouTube says it is toughening its approach.