As you probably know, the planet isn't doing so well these days.
But, despite what you may think, there's quite a bit of hope out there. And even if you aren't a policy wonk or don't hold some form of office, you can still make a difference.
This week, The Huffington Post is rolling out a series of challenges to you, dear reader, in an effort to green up the world around you, and, with strength in numbers, do a little bit of good. We'll urge you to go meatless on Mondays. Tuesdays will be about turning off your energy-sucking electronics. And Wednesdays? Do your best to go waste-free and compost or recycle every scrap of trash.
Take a look at some of these nifty PSAs to start planning your week. Once you've watched them and learned them, share them with your friends using the hashtags below. With a little bit of support, we can make a whole lot of difference.