The permafrost in Switzerland's Alps is the warmest since records began, the Swiss Academy of Sciences announced Tuesday.

A study has found New Zealand's native forests are absorbing more carbon dioxide (CO2) than previously thought. Study leader, ...

Survival expert Bear Grylls pushes his limits alongside the Royal Marines in the unforgiving Arctic wilderness. From icy plunges to live-fire drills, this rare glimpse into elite military training is ...