The Natural Resources Defense Council has put together a great Q&A on global warming, its causes, and its solutions.

If you need a quick answer, here's where to look.

Environmental Defense, one of the premier US environmental action groups, has put together a rock-solid report demonstrating the human causes of global warming.

The link is a PDF of the report.

Still a little fuzzy on how global warming actually works? Check out this page from the Environmental Defense Fund and they'll set you straight!

There are a lot of myths out there about climate change, and they keep us from real action to save our planet and the polar bears.

The Environmental Defense Fund has collected a list of the most common myths you'll encounter, and given some great answers you can use whenever somebody tells you global warming is a figment of Al Gore's imagination.

One option to reduce your CO2 pollution is, once you've cut as much energy as you can, to purchase offsets for the rest.

The Environmental Defense Fund has done some great research and makes it easy to offset your emissions. Check the site for more info and how to offset.

The Environmental Defense Fund has made a basic carbon calculator to find out your carbon dioxide emissions, and then work to reduce them.

The Environmental Defense Fund has put together a great report detailing the true costs of cutting global warming pollution. The next time someone tells you saving the planet will ruin the US economy, you'll be able to hit back -- hard.

The Center for Biological Diversity is one of the USA's foremost advocates for biodiversity across America. They have been actively working to protect the polar bear since 2001, and have recently sued the federal government for delaying the listing of the polar bear as an endangered species under the US Endangered Species Act.

Check their page for information on the crisis polar bears face and action links to help save the bears!

The Natural Resources Defense Council (USA) has put together some great fact sheets to use whenever somebody tells you that we NEED oil from our national parks.

Drilling in the Arctic National Wildlife Refuge is a dangerous option which would very minimally impact America's energy economy. Check out the fact sheets for more info.