Health

Dr. Ilse Levin specializes in internal medicine, but you could say she really focuses on incarceration medicine.

How many teens are sending sexual photos or texts by phone? And what else are they doing?

Researchers surveyed nearly 2,000 high schoolers in Los Angeles to find out. Among kids who had cellphones or access to them (and that cover almost all of them), about 15 percent reported "sexting."

In my Morning Edition story today, I look at expectations — specifically, how teacher expectations can affect the performance of the children they teach.