Inca society kept records by encoding information into knotted cords called khipu. A new analysis of hair woven into these ...

NPR's Ailsa Chang talks to actor Daniel Dae Kim about his upbringing and training for action scenes in his new TV series, Butterfly.

Within Israel's prime minister pushing for a full occupation of Gaza, some of Israel's exhausted soldiers are pushing back and calling for an end to the war.

When more humans participate in a game of tug-o-war, each individual puts in less effort. But the opposite is true in weaver ants, according to new research in the journal Current Biology.