Science

Follow PBS NewsHour’s complete coverage of Science and Technology stories.

NASA's Dawn spacecraft obtained this image of the giant asteroid Vesta with its framing camera on July 9, 2011. Photo by NASA/JPL-Caltech/UCLA/MPS/DLR/IDA At 1 A.M. Eastern time on July 16, NASA's Dawn spacecraft will become the first man-made probe…

Photo credit: Young aspen trees in Yellowstone National Park. Photo by William Ripple, courtesy of Oregon State University. Sea otters eat sea urchins and sea urchins eat kelp. When sea otters are present, the coastal kelp forests maintain a…

EmbedVideo(1001, 482, 304); We've all been there: you're in a heated debate with a friend about a role one of your favorite actresses played five years back. You struggle for 30 seconds, maybe a minute, to bring the…