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In parts of southern Africa, HIV has picked up mutations that slow down its ability to grow inside a person's blood. That's a good sign. But will it be enough to make a difference in the epidemic?

Manfred Karg's 19-year-old son, a convert to Islam, is one of at least 60 Germans killed fighting alongside ISIS militants. Karg says efforts to stop the flow to Syria and Iraq are taking too long.

In rural Alabama, HIV infection rates are among the highest in the nation, but talk of the virus is largely taboo. One researcher is hoping to break through the stigma with a video game.

A neurologist's unorthodox thinking led to an experimental drug that allows trapped nerve fibers to grow again. And that growth helps amplify signals that restored movement in laboratory rats.

Melissa Block speaks with Kevin Fedarko of Outside Magazine for a remembrance of conservationist and outdoorsman Martin Litton. He died Sunday at his home in California at the age of 97.

Israel will hold parliamentary elections in March after Prime Minister Benjamin Netanyahu broke up his cabinet and asked voters for a new mandate.

The test is predicted to take less than five hours, but researchers say the information learned will be critical to future flights,

He was in the English rock bands Small Faces and Faces, and he also played keyboard for the Rolling Stones. McLagan died today in Austin, Texas. He was 69.

Unlike the 1997 Kyoto treaty, the plan on the negotiating table in Lima this week asks every country, developed and developing, to limit carbon emissions. Each nation would set its own target.

In Nashville, Tenn., several public schools are struggling to compete with nearby charters. To recruit more students, teachers are tearing a page from the charter playbook: going door to door.