350
We are a group of people from around the planet—young and old, scientists and writers and activists—who have one thing in common. We know the most important number on earth: 350. And we know how to use that number to finally get global action on the worst crisis humans have ever faced.

But we can only do it if you help

<http://www.350.org>

Yale Environment 360 is an online magazine offering opinion, analysis, reporting and debate on global environmental issues. We feature original articles by scientists, journalists, environmentalists, academics, policy makers, and business people, as well as multimedia content and a daily digest of major environmental news.
<http://e360.yale.edu/>

Mongabay.com seeks to raise interest in and appreciation of wild lands and wildlife, while examining the impact of emerging trends in climate, technology, economics, and finance on conservation and development.
<http://www.mongabay.com>

Tropical Conservation Science is an open-access e-journal that publishes research relating to conservation of tropical forests and other tropical ecosystems.
<http://tropicalconservationscience.mongabay.com/>