Outdoor activities such as biking, climbing and hiking keep you active during the warmer months. Learn more about snow sports like bobsledding and the Iditarod to keep you moving this winter.
Do I have to use film for wildlife photos?
How Action Photo Equipment Works
How Bird Photography Works
How the Adventure Cycling Association Works
How American Whitewater Works
How MayContainNuts.com Works
What If My Parachute Fails?
Extreme Sports Athletes Crave the Reward, Not the Risk
Stuntman Skydives With No Parachute, Just Aims for Giant Net
What's It Like Traveling the World's Most Dangerous Road?
Bike Helmets That Look Like Toy Hair Could Get More Kids to Wear Them
Bike Helmet Airbags Could Keep Your Head Safe
Junko Tabei, the First Woman to Conquer Everest, Has Died
How Climbing Gear Works
How Tree Climbing Works
How Fish Fraud Works
5 Wackiest Ways to Go Fishing
5 Tips for Removing Fish Hooks
How North America's Most Famous Hiking Trail Got Its Start
5 Pieces of Trail Advice to Keep You From Looking Like a Newbie
The 'Wild' Effect? Why Hiking Is Surging in Popularity in the U.S.
Why Many American Suburbs Welcome Urban Deer Hunters
How Trophy Hunting Works
How the NRA Works
Land Rover Goes Off-road in the City
Why is torque important in off-roading?
How the Dakar Rally Works
Top 5 Truck Killers on a Typical Ranch
Does my ranch truck need an aftermarket bumper?
How Cattle Sorting and Penning Work
Can living off the land benefit your health?
How can I experience rewilding without giving up all my modern comforts?
How Human Rewilding Works
Are Minimalist Running Shoes the Key to Fewer Injuries?
Is Runner's High Even Real?
Is Running Every Single Day Good for Your Body?
Will Beijing Athletes Know Fake Snow From Real Snow?
How Curling Works
Learn Proper Snowboard Care
Are triathlons safe?
Can myofascial release benefit runners?
How Bicycle Rollers Work
The Kids Are All High
10 Urban Sports That Might Get You Arrested
10 Things We Want to See in Adult Playgrounds
What's Attracting So Many People to Magnet Fishing?
Why Oahu's North Shore Is the Perfect Place to Surf
Some of Glacier National Park's Best Sites Are Underwater
Learn More / Page 23
If you've been on a biking trail in the last few years, you've probably seen all kinds of crazy-looking bikes. Mountain bikes just keep accumulating more gears. Today, some bikes have as many as 27 gear ratios. What do they all do?
By Karim Nice
'The bends' is a dangerous condition based on water pressure. Find out how you can get -- and prevent -- the bends.