Kyle Burgess was on a trail run when he came upon a protective mama mountain lion. Using his phone, he filmed her as she escorted him away from her cubs for six terrifying minutes. He had no idea he’d just shot internet gold.

Knees are critical joints, and they can't be traded in like last year's cell phone. Keep your hinges state-of-the-art with our complete guide to strength, conditioning, and injury prevention.

A made-in-America longboard to keep you rolling proud

If I fall through the ice into a lake, what should I do? And what should I do after I get out? The Editors Santa Fe, New Mexico

I constantly sprain my ankle playing basketball. Do you have any suggestions on how to improve my ankle strength and balance to prevent this?

Avoid injury and improve your stride with these 5 simple stretches and strength exercises for your groin muscles.

For all of you coastal naysayers who scoff at the idea of lake surfing, Transworld Surf has a first-person account of one man's experience surfing at Stony Point, Minnesota, on Lake Superior. More than the story, it's the photo slideshow of huge waves and the brave (frigid) souls that surfed…

The government contractor's latest filing indicates that the future of wildfire fighting could involve artillery shells

You should eat something first. While you are sleeping, your body utilizes liver glycogen to provide a steady source of fuel to your brain and central nervous system; therefore, when you wake up, your liver glycogen stores are depleted, sometimes by up to 80 percent. Because liver glycogen is one…

I'm a professional triathlete studying for an Environmental Science degree. I'm moving to erica and wish to get into the environmental industry and continue to pursue my other profession. Any idea how I can go about this? Matthew Sydney, Australia