NPR's Ailsa Chang talks with Emily Kwong and Regina Barber of Short Wave about the fluid dynamics of crowds, an early fossil of a modern bird and new data on how people's moods change through the day.

The annual point-in-time count of Guam’s homeless is set for Friday, Jan. 31, and residents can expect groups of volunteers around the island throughout the day. This is according to the Guam ...

Voters in California and Texas affiliated with a Democratic group want to intervene in a lawsuit filed by four Republican state attorneys general that is attempting to exclude people in the U.S ...

Voters in California and Texas affiliated with a Democratic group want to intervene in a lawsuit filed by four Republican state attorneys general that is attempting to exclude people in the U.S ...