Faster. Higher. Squeakier.

In 2007, molecular biologist Ron Evans flipped a genetic switch on test mice and turned them into super-athletes. Headlines ensued, as did nervous references to human applications and "exercise in a...

Fancy Footwork

This month's most notable quotes from adventurers around the world.

Winter Running

Essential winter running clothes and accessories.

Super Friends

The next step in the smartphone revolution? Social fitness.