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Optimists. Activists. Leaders.

For big emissions reductions, focus on the folks who buy vehicles by the thousands

By building eco-houses, students are jump-starting careers

When echolocation fails

Want a green job? Bypass the ivory tower. A community college may be better at getting you employed.

Your decision is easy: The Keystone XL pipeline will make carbon pollution worse

Many colleges claim that their eco-lessons are greening the world. Now some schools are trying to prove it.

Bill McKibben on how to make fossil fuels as unacceptable as apartheid

Invading the Privacy of the People Who Make the Club Tick

10 unique locations to see hummingbirds in North and South America, including places known for their hummingbird diversity and the presence of rare or endangered species.