Did you resolve to exercise more in 2013? If this graph from Google is any indication, you've got a tough road ahead of you.

Fitness trends come and go, but weight training in particular never seems to come into style. Part of the problem is that most people associate it with bodybuilding culture, and women in particular are reluctant to join the guys at the back of the gym.

Many sport climbers have entertained the idea of building a climbing wall in their own homes — but few of them ever actually pull it off.

Sure, icing your wrists can help you cool down more easily — but could chilling your palms help you lose weight and stay in shape?

The story begins with an insurrection, and ends with infanticide. A male gelada monkey, unsatisfied with his social standing, challenges the authority of a superior gelada. The payoff: a so-called "reproductive unit," comprising a dozen females, that will mate with him and him alone. If the usurper is victorious, he will …

Mutation is one of the big driving forces behind evolution, as it can allow species to quickly gain the genetic tools necessary to survive and adapt. But even the perfect mutation can mean trouble if it can't work with others.