Science

Buildings were weaving in and out. The street pitched like a stormy sea. Bricks were raining down all around him. The ground shook with such violence that Jacob thought the world had come to an end.

The San Francisco Earthquake is a thorough examination of the April 18, 1906, earthquake that is considered one of the first environmental disasters of the modern age. Striking California's Bay Area, the quake and its resulting fires destroyed a rapidly growing, prosperous city and left more than 500 people dead, thousands homeless, and $500 million worth of property damage.

A huge earthquake rocked the West Coast on April 18, 1906. Worst hit was the city of San Francisco, where buildings collapsed and fires raged for days. Thousands of people died, and many more were left homeless. The disaster was just one of a long series of earthquakes triggered by the San Andreas Fault. It taught scientists valuable lessons about preparing for earthquakes.

Born on a crocodile farm in Zambia's untamed South Luangwa Valley, the puppy seemed different from his littermates. Too quiet. Unresponsive. Terriers are usually full of energy and bouncing off walls. But not this one. Nobody wanted him. Enter Anna and Steve Tolan-former police officers who had left behind their life in England to live in the African bush. People thought the Tolans were a bit different, too. The peculiar puppy suited them perfectly. They named him Bulu, or "wild dog" in the local Nyanja language.

On June 10, 2003, a little rover named Spirit blasted off on a rocket headed for Mars. On July 7, 2003, a twin rover named Opportunity soared through the solar system with the same mission: to find out if Mars ever had water that could have supported life.A thrilling addition to the acclaimed Scientists in the Field series, The Mighty Mars Rovers tells the greatest space robot adventure of all time through the eyes—and heart—of Steven Squyres, professor of astronomy at Cornell University and lead scientist on the mission.

Take a walk in the rain forest. It's hot and humid and humming with life. Look up into the dense canopy of leaves above you. Tangled vines lead to the treetops, where parrots squawk and monkeys swing from branch to branch.

Get ready ­ a spectacular adventure awaits you in the jungles of the Amazonian rainforest. Your journey begins now! RAINFOREST EXPLORER is packed with information about the world¹s most complex ecosystem.