LOS ANGELES -- Los Angeles averages more than 300 days of sunshine a year, and it often seems as if environmentalists outnumber rattlesnakes in many parts of the sprawling city. It would seem, then, that solar energy would be a thriving local industry here. (Today)

A group of top scientists from around the world will review the research and management practices of the United Nations climate change panel so that it can try to avoid the kinds of errors that have brought its work into question in recent months, officials said Wednesday. (Today)

The Cassini-Huygens spacecraft, which just had its mission to explore Saturn extended to 2017, is one of the many robotic space probes NASA has used to explore the solar system since 1958. (Today)

Let's say you are a boy who collects frogs and snakes from a neighborhood bog and who keeps a spectacled caiman and boa constrictor as pets. Further, you take the boa into the family pool to cavort, although the human swimmers might have used a different verb. (Yesterday)

WASHINGTON -- China and India formally agreed Tuesday to join the international climate change agreement reached in December in Copenhagen, the last two major economies to sign up. (Yesterday)