Whether the 37th anniversary of Earth Day has you planting trees, working in your garden, enjoying (finally!) the arrival of spring, or just having a quiet Sunday morning, here are some tips for making this year your "greenest" yet.

If you pick just one thing off this list to change in your own life, you'll be going a long way toward improving the health of the Earth and it's citizens. For instance, did you know that if every person in America replaced just 5 conventional light bulbs in their home with compact fluorescent bulbs, it would be like taking 8 million cars off the road? (Plus, you'll save money!) Turning off the tap while you brush your teeth, combining errands into one trip, and recycling your newspapers (or switching to reading them online) are all changes you can make that won't impact your life in a big way. If you're interested in bigger changes, however, you can always look into energy alternatives or research green vehicles.

Finally, take some time today to measure your carbon footprint. This one was a shocker for me. I like to think I make a decent effort to reduce my own carbon footprint, but even so, if everyone lived like I did we'd need 4.3 planet Earth's to support us! There are some things I can't change easily (size of my house, my car's gas mileage), but there are many that I can (eat less meat, eat more local foods). Take the quiz and see how you do! Finally, here's a fun way to keep track of your progress as you make green changes to your life.

Happy Earth Day!