1. Recycling, 2. Global Warming, 3. Freecycle, 4. Earth, 5. Pollution, 6. Al Gore, 7. Environmental Protection Agency, 8. Live Earth, 9. Hybrid Cars, 10. Solar Energy
In terms of sheer search volume, residents of New York City proved the most interested in global warming, edging out the environmentally conscious San Francisco Bay Area. When it came to hybrid cars, Los Angeles posted the most searches.