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The HowStuffWorks Auto Section contains articles about everything from engine workings to classic cars. Learn about cars on HowStuffWorks Auto.

The Union of Concerned Scientists is the leading science-based nonprofit working for a healthy environment and a safer world through a combination of independent scientific research and citizen action.

Read hybrid car reviews and compare hybrid models. Buying guides and interactive tools. Read about plug-in hybrids, electric cars, biofuel-powered cars, fuel-efficient small cars, and other auto alternatives for the 21st century.

ABCNews.com is your breaking news resource for top stories, videos, photos, blogs, special reports and exclusive celebrity interviews on Good Morning America, World News, Nightline, 2020 and This Week.

Alternative energy news and information resources about renewable energy technologies. The purpose of this site is to provide a resource and to help raise awareness about renewable energy technologies.

The Natural Resources Defense Council works to protect wildlife and wild places and to ensure a healthy environment for all life on earth.

News and features about the latest technology, engineering, and science advances including electronics, computing, energy, biomedical, robotics and more. Get Inside Technology with IEEE Spectrum the flagship publication of the IEEE.

YouTube is a place to discover, watch, upload and share videos.

Eartheasy provides solutions for sustainable living in the form of eco-friendly products, comprehensive guides, and informative articles.