So you want to do something about global warming, and you don't know where to start? Well, whether you want to become an environmental activist, or you just want to learn how to make your own carbon footprint a little smaller, there's plenty of information out there. The list below is by no means exhaustive, and each site has plenty of additional links and content over and above what's mentioned below. But everyone needs a place to start, and the websites below can help point you in the right direction.

Live Earth

The Live Earth concerts, established by SOS (including former U.S. Vice President Al Gore and award-winning producer Kevin Wall) are designed to get people to act to fight climate change. This site is full of tips for going green in small ways, and taking part in the Live Earth event on 7/7/07, even if there's no concert in your hometown.

An Inconvenient Truth

Based on the documentary featuring former U.S. Vice President Al Gore, this website features tips for getting involved locally and internationally. Many believe the film helped revive concern for global warming, and there are plenty of options to combat global warming available here, along with options to buy the DVD, of course.

Treehugger

Covering all aspects of being environmentally responsible, this site has more features than you can shake a stick at. The blog-style news coverage along with extensive feature reports and links to green products and companies are just the beginning. With tips on greening everything from your wardrobe to your water, following some of TreeHugger's advice really is a hug for the planet.

Grist

This environmental news and analysis site aims to cover all things environmental with a touch of humour, and they're definitely not afraid to get down and dirty with their coverage of political attitudes and (in) action. If you're an environmental crusader, features like Grist's "How to talk to a Climate Skeptic" will help to get you ready for the long road ahead.

National Geographic's Green Guide

Never were there more practical tips for greening up everyday life. With information for consumers on everything form fashion, to home décor, to organic and fair trade food, The Green Guide aims to let you go eco-chic in every way. The extensive product reports are a great resource to find green alternatives for all of life's daily needs.

David Suzuki Foundation

Canada's environmental crusader provides links to great carbon calculators, plus tips on how to go carbon neutral, and who else is already doing it. This is also one of the few sites that looks at the impact that toxins in the air, food and water can have on human health and how environmental conservation can be good for the economy.

Groovy Green

Wondering why gas is so expensive? Wonder no more. This newly-expanded site has a slightly more irreverent tone, and a great list of links to enviro-blogs. The site also includes book and product reviews, plus alternatives to things you need, like options to replace those plastic bags for doing the old stoop and scoop while walking the dog.

World Wildlife Fund of Canada

Great facts and resources on global warming, with neat animation to illustrate the source of carbon dioxide and how it's getting worse, not better. With their Save Our Climate campaign, the WWF helps make the information straightforward and easier to understand, with a good breakdown of the different areas were work is needed and many ways to take action.

Environment Canada

To keep up to date on what the folks in Ottawa are up to on this issue, there's no place better than the Environment Canada website. It also has great practical tips and lots of information resources on environmental issues. You can also have a look at issues of the EnviroZine, a free newsletter covering issues from mycology (that's mushroom stuff) to environmental forensics.

The Green Pages

It dubs itself "Canada's Environmental Information Portal," and it doesn't disappoint. Part blog, part news aggregator, the best feature is all the links to news local stories and upcoming events in each province. A work in progress, this site is maintained by a network of people, and diehards can even get their own greenpages.ca e-mail address.

National Recycling Coalition

This U.S.-based group is all about reducing waste, reusing and recycling in North America. But the best part of this site is really the "Recycling Calculator." Figure out how many trees you save by recycling your newspaper, how many t-shirts can be made from those plastic bottles and how much energy is saved by recycling pop cans. You won't be disappointed.

Intergovernmental Panel on Climate Change

Established by the World Meteorological Organization and the United Nations Environment Program, the panel's comprehensive assessment reports on "human-induced climate change" should be enough to convince even the biggest skeptic. If you want to know what politicians are basing their decisions on, most of it is available here.

Sierra Club

Loaded with information about energy conservation and other international issues like responsible trade, you can also listen to Sierra Club Radio for tips on lifestyle changes. Their "MPG Calculator" is also a fascinating look at what you could save on gas if big oil companies used current technology to make the vehicles we drive now more fuel efficient.

The Nature Conservancy

The organization's mission is to preserve diversity, and with a great feature to calculate your carbon footprint (though you'll have to pretend you live in a U.S. state), plus interactive maps, podcasts and a live nest cam, there's a little something for everyone. You can also become a member for free and create your own "Personalized Nature Homepage."

Want to lead a greener lifestyle? For a list of eco-projects, go to DiscoveryChannel.ca