You’ve got some explaining to do.

Because there’s no way to justify why you’d be so good to your mom (getting good grades, perfect manners, remembering to call) and so rotten to Mother Earth (driving gas-guzzling cars, using aerosol cans, never recycling).

Thankfully, The Live Earth Global Warming Survival Handbook, by David de Rothschild, can jump-start your eco efforts. This official companion to the Live Earth concerts is full of easy-to-implement steps to greener living.

You’ll get the lowdown on everything from paper vs. plastic (both are evil; reusable bags are best) to subsizing your lifestyle (McMansions, wide-screen televisions, and mega SUVs have gotta go).

After a few chapters, you’ll be ready to take your first steps toward helping to avoid a global catastrophe.

And finally give your long-suffering Mother Earth a little green peace.

Available online at amazon.com. To learn more about Live Earth concerts, go to liveearth.org.