Using its amazing sense of smell, a grizzly bear can sniff out food from miles away. With jaws and teeth that can bite through an iron skillet, grizzly bears are fearsome hunters. Readers will learn about what makes grizzly bears such deadly predators, from their hunting styles to what they like to eat. Fun Facts and an Amazing but True section will thrill readers and give them a closer look at the lives of these massive creatures.

The spirit of a headless queen? The wandering ghost of a famous president? Could these spooks be real? Get the eerie details of the world’s most haunted places.

Sharing perspectives on their journeys into the physical sciences, these heroes provide readers with advice about overcoming adversity.Quake Chasers: 15 Women Rocking Earthquake Science explores the lives of 15 diverse, contemporary female scientists with a variety of specialties related to earthquake science.Dr. Debbie Weiser travels to communities post-disaster, such as Japan and China, to evaluate earthquake damage in ways that might help save l...

Dirt bike racers don't let anything stand in their way as they blaze to the finish line. Tight turns, steep hills, or huge jumps these riders brave them all. Take a look at dirt bikes, how they work, and the races they compete in.

Alien abductions? Mysterious lights in the sky? Could these events actually be the work of extra terrestrials? Get the facts about the top ten UFO and alien mysteries of all time.

Airplanes that soared through ancient skies? An underwater city? Could these unbelievable things ever have existed? Learn about the top ten ancient mysteries and investigate for yourself.

No other motorcycle can take a beating quite like a dirt bike. These lightweight speedsters combine strong suspension systems with high powered engines and superb handling. Find out how today’s riders push their tough bikes to new limits in racing, freestyle, and beyond.

Motorcycle riders speed across twisty paved tracks and bumpy off road trails. They race at top speeds sometimes on bikes without brakes! Here's your chance to see why more than 2 million fans watch motorcycle races each year.

Ironing on a mountainside. Chasing after cheese. These are not your ordinary activities. Get ready to learn about some of the world’s strangest sports.

Fish that look like cartoons. Lizards that squirt blood from their eyes. These are not your ordinary creatures. Get ready to learn about some of the world’s strangest animals.

Vampires and werewolves that hunt in the night? A prehistoric sea monster that frightens fishermen? Where did the ideas for these creatures come from? Could some of them be true? Discover tantalizing tidbits about the top ten mythical creatures of all time.

Indy car drivers use skill, speed, and the latest technology to blaze down the track. They race on tracks of all shapes and sizes and all around the world. Take a look at Indy race cars, how they work, and the races they compete in.