From Bart Simpson to Tony Hawke, skateboarders are dead serious about their ride. And thanks to Exploratorium's Skateboard Science, you'll learn how to get your footing on this high-flying sport. Drop into the half-pipe at www.exploratorium.edu/skateboarding and get the hard facts on tricks, tips and more. Through a live Webcast, you'll better understand the physics of skating, and how pros like Matt Fields and Dustin Dollin take advantage of gravity to crank out McTwists, ollies and railslides. Trick Science shows how skating and science come together as one, from jumping to ramps to midair maneuvers. Skateboard Science is a wild ride. Just be careful with those grinds and fakies!

From Billie Jean King to Muhammad Ali, the past century in sports has been loaded with colorful, passionate and exciting athletes. At ESPN SportsCentury, you'll find new biographies of the greatest athletes. Grab a hot pretzel and front-row seat at http://espn.go.com/sportscentury for the sporting flashback of a lifetime. You can participate in interactive polls and relive classic moments of sport. The Biographies Page features legends like Michael Jordan, Jim Brown, Bonnie Blair and Ty Cobb. From Super Bowls to the Olympics, you'll be surfing into overtime. (Disclaimer: This site is now contains advertisements.)

From the Stanley Cup playoffs to the women's and men's hockey tournaments at the Winter Olympics, hockey has proven to be one of the fastest, coolest games on Earth. At the Exploratorium's Science of Hockey Web site, you can learn a side of this game that the television announcers never tell you about, such as: How to slap a puck 100 miles per hour, or how much energy is generated by two hockey players in a mid-ice collision. Find out by skating to www.exploratorium.com/hockey. The site features a fascinating look at the mechanics of skating and the science of ice. Plus, you'll hear from leading physicists, chemists, and the players and coaches of the NHL's San Jose Sharks! And when you're ready to hit the ice yourself, be sure to check out the links page, which is a slice of hockey heaven. The Science of Hockey World Wide Web site is for both the young scientist and the hockey enthusiast alike!

The Science of Cycling Web site allows you to explore the workings of your bike in ways you never imagined. Pedal over to www.exploratorium.edu/cycling and you'll be immersed in the exciting world of cycling. Women's cross-country champion Ruthie Matthes and bicycle frame-builder Paolo Salvagione will help you understand the culture and physics of this activity. Interactive media will show you the aerodynamics of the bike frame, the forces of braking and steering, and the workings behind drives and gears. Fill up your water bottle and wear your favorite cycling jersey. It's time to ride!

From the precision of a baseball pitcher's curveball to the amazing accelleration of world-class sprinters, most jocks know there's more to sports than strength. Science is just as responsible for an athlete's success. At the Sport! Science Web site, you'll discover why the sporting life is more technical than you ever thought. By racing out to www.exploratorium.edu/sports you'll read firsthand accounts from rock-climbers, hockey players and gymnasts on how science has helped them. How does Michael Jordon stay airborne for so long when he slam-dunks? In addition, you'll find outstanding advice and insight at the Science of Hockey and Science of Cycling pages. These sections use interactive multimedia to demonstrate everything from the making of a mountain bike to a 100-mph slapshot.

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