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...

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....

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.

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...

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...

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.

Dragsters are the fastest racing machines on Earth. Using powerful engines, drag racing cars and motorcycles rush down the track at blistering speeds. Check out the types of...

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...

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.

Mixed martial arts competitors wrestle, jab, and kick their ways to the top. The best  fighters never pull any punches. Look inside for the biggest names in MMA.