Mr. and Mrs. Pig's new babysitter is not what she seems, but their ten piglets prove masters of the situation.

NASA Astrobiologist and renowned scientist Dr. David Grinspoon brings readers an optimistic message about humanity's future in the face of climate change. For t

An engaging account of our quest for habitable environments, recounting fascinating recent discoveries and providing insight into future space missions.

Over the past twenty years, astronomers have identified hundreds of extrasolar planets--planets orbiting stars other than the sun. Recent research in this burge