How much is climate change data worth?

A big part of what we know about melting ice, and other effects of global warming, comes from scientists with boots on the ground. And that work can sometimes be extremely dangerous. Ari Daniel has experienced some of those dangers first hand.

(Image: A research team crossing an ice plateau in the Indian Himalayas faced risks of hidden crevasses, storms, avalanches and earthquakes. Credit: Paul Mayewski)