expository

When disaster strikes. When a disaster strikes, animals need as much help as people. Could you leave your home and family to spend weeks or months rescuing animals? Many people around the world do. Meet Lucy Pribbenow, an amazing woman who left her home in Alaska and headed to Louisiana after Hurricane Katrina to save thousands of dogs and other pets.

Bigfoot: Fact or Fiction? Could a giant, hairy, ape-like beast be lurking deep in the woods near your house? For centuries, people all over the world have claimed to have seen creatures like this. Most people have an opinion about whether Bigfoot is real, but what does the evidence say?.

Everyday life in space. Which would you rather do: Walk across a room or float through it? In space, everything seems to float - including you. To live in space, astronauts learn very different ways of doing the most basic things we take for granted on earth.

Power up! New forms of transportation are changing the way people get around. Some new vehicles don't run on gas- they run on human energy. And they go everywhere: on land, on sea, and into the sky!.

The search is on. When people look up at the night sky, they might think about many things: constellations, shooting stars, or the beauty of the moon. But few people think about finding a new home in the sky. Scientists today are searching for other planets that might be able to support life- maybe even intelligent life.

Professional wildlife detectives. Someone who studies nature, especially animals and plants, is called a naturalist. These scientists all used the same skills of observation, record keeping, notation, and research. The tools needed to find and describe wildlife in the city are the same as tools needed to find wildlife anywhere.

Meet the manatee. The manatee, sometimes called a sea cow, has enchanted sailors and lovers of wildlife since ancient times. Now this gentle creature is losing its habitat. In a strange twist of fate, human technology that can harm the environment may also save the manatee.