I've been celebrating Earth Day since the very first one, in 1970. My elementary school had an Earth Day march around the neighborhood and I carried a sign (taped to a snow shovel) protesting noise pollution. We lived below an O'Hare airport flight pattern that shook the house, so it was a pet cause of mine.

Today, I brought my water to Jazzercise in my new Nalgene Filter for Good BPA-free bottle (the one they use on Biggest Loser) and I wore my supercool Bummer T-shirt from Green Label Organics, which I got at Whole Foods. (You also can order them online.)

I love the shirt because I live in Hummer-heavy South Florida, which strangely seem to be driven by tiny women who workout at my gym. At first glance it looks like a Hummer fan shirt but look again! It's also made from organic cotton and really soaks up the exersweat.

And this week I'm making it a priority to reduce my carbon footprint by fitting in more meatless meals.