The roof of the world is melting
2 billion people depend on it. But according to this international study, the Himalayan range is threatening to "collapse".
Why cruise ships are so harmful to the environment
3 zero-waste tips for doing the dishes
Meet the kagu, the barking bird that narrowly avoided extinction
How to protect against forest fires
Wildfires threaten wildlife across the globe
23 ocean giants that will make you feel very small