You might not see those math and science problems ever again—but that's no reason not to learn them.

VIDEO
Dalí nearly stumped panelists on the U.S. television game show.
A newsreel shows what life was like for contacts-wearers before the invention of soft and breathable lenses.
A zoom through the universe...and inside ourselves.
In 1975, professional basketball player and former Globetrotter Connie Hawkins challenged singer-songwriter Paul Simon to a game of one-on-one.
Comparative psychologist Fumihiro Kano and his collaborator Satoshi Hirata are using the movies to study long-term memory in apes.
Professor Frank Drake proposed a super-depressing formula explaining why we haven't gotten alien radio signals yet.
See what's happening in the spine during physical movement.
A new short film illustrates the difficulty of understanding English if you don't understand English!