Science

Tsar Alexander III's remains have been exhumed for DNA tests to confirm the identity of two grandchildren. Historians say the Russian Orthodox Church wants to reaffirm its ties to the imperial family.

There was cheering when nearly 200 countries reached an historic agreement to stem global warming. But the frantic deal making says something about what it may take to carry the agreement out.

"History is here. All the conditions are met. The decisive agreement for the planet is now," French President Francois Hollande said Saturday.

The U.N. climate conference in Paris was supposed to end Friday, but negotiators have extended it for at least another day. NPR has the latest from Paris.

Armed with a Ph.D from Columbia University, Ousmane Ndiaye wants to tell farmers when the rain will (and won't) fall. But he's the first to say he's not always right.

Bartenders are finding novel ways to reuse leftover wine and spent ingredients from cocktail-making. It's just one part of a nascent movement toward sustainability in the industry.

Producers of poultry, cattle and pigs continue to use more antibiotics, according to the latest government data. That's despite more pledges from food companies to sell meat raised without the drugs.

A comparison of common treatments for early-stage breast cancer finds lumpectomy with radiation is essentially equal to breast removal in terms of recurrence and survival, with fewer complications.