Earth Day 2010: The Best Ways To Get Involved

Today is the 40th anniversary of Earth Day. Across America, communities honor our environmental holiday by raising awareness about green issues and working to make a difference at a local level.

HuffPost Impact is highlighting the ways Americans are getting involved on Earth Day -- and letting you know how you can join in. You can also celebrate Earth Day by going to see Disneynature's new film Oceans -- for every person that goes to see the film in its opening week, a donation will be made to The Nature Conservancy.