UN's new campaign to fight plastic pollution
Want to #BeatPlasticPollution? Arnold Schwarzenegger, Moby, Tom Felton and many others are taking part in the challenge. Here's how it works:
Low-tech initiatives: Providing villages with water without using any electricity
Brazil: tarballs have been piling up on over 100 beaches
Interview: Native Americans are facing a new threat according to Casey Camp Horinek
Why is Copenhagen such a sustainable city?
John and Molly Chester traded city living for barren farmland
Wildfires in Bolivia have killed millions of animals