If you can condense your commitment to the planet into 140 characters, this is the campaign for you. 1Sky's 1Climate, 1Tweet campaign challenges you to come up with a tweet that best describes the demand for strong climate legislation.

It can be anything, so get creative—a haiku, a rally cry, a scare tactic, a Rush Limbaugh joke—whatever you can put best into 140 characters. But make sure to include the #1Climate hash tag in your tweet. And make sure to do it by the end of the day on Friday, October 23.

The winning tweet will be spread across the Twitterverse and become a rallying call for 1Sky to demand action on strong climate legislation.

It's not a bad deal for runners up, either: the top five finalists will receive prize packages with contributions from planet-friendly partners No Impact Man, Age of Stupid, Brighter Planet, and more.

Check out 1Sky for all the details and rules and, of course, to enter the contest.

And while we're on the subject, if you haven't figured out what you're doing this Saturday to fight climate change, start organizing now.