social science

Arts, Culture & Media

How Creative Are You?

The Torrance Tests of Creative Thinking were the work of Paul Torrance's lifetime. They are still widely used to assess students and job applicants, and have been translated into more than 50 languages.

Science, Tech & Environment

Geo answer

We were looking for a tributary of the Amazon that starts in the Brazilian state of Mato Grosso. The answer is the Xingu River. Researchers working near the source of the river have un-covered traces of ancient settlements -- known as "lost cities" -- buried under a thick layer of jungle. Lisa Mullins speaks with Michael Heckenberger, a professor of Anthropology at the University of Florida who led an expedition to the region.

Science, Tech & Environment

A Deadly Day in Baghdad

Five U.S. service members were killed yesterday by a fellow soldier on an American military base in Baghdad yesterday. For more on this tragedy and the military's reaction, we turn to Ernesto Londono, The Washington Post's Baghdad correspondent.