When shopping for a new computer, think laptop instead of desktop for the greatest energy savings. A laptop is about one-third more energy efficient than a desktop. And if you want to get an even bigger energy savings, look for laptops that feature LED screens, which are more efficient and are also mercury-free. And remember, when you need to dispose of your old computers, take them to retailers like Best Buy and Staples, which will recycle them free of charge.

If you have a place at your home that provides food, water, shelter and safety for wildlife, the National Wildlife Federation wants to name you a Certified Wildlife Habitat. Over 400,000 gardeners across America have been certified by the NWF, and it's all part of a campaign to get 1 million gardeners to be part of the Million Pollinator Garden Challenge to help restore critical habitat for pollinators (like bees) in peril. Learn more at nwf.org.

It's not hard to maintain a lush, green lawn and to do it without the aid of chemical herbicides or fertilizers. One of the easiest ways to remove invasive weeds like dandelion is to use a chemical-free alternative called corn gluten. Not only does it kill weed seeds, it's also so safe that after application, pets and people can play on the lawn. Corn gluten is a byproduct of cornstarch and corn syrup production and is non-polluting, so homes near waterways like lakes and streams won't risk polluting water by using it.