Are you making fresh-squeezed juices at home? There are many health benefits to juicing. But one of the downfalls? All of the pulpy, fibrous waste that comes out the other end of the juicer. Instead of tossing it in the trash or down the garbage disposal, give composting a try. Since the organic matter is so finely pulverized, it will break down quickly in a small backyard compost bin. Mix it with grass clippings, leaves and coffee grinds, and watch it turn into beneficial mulch in just a few days. You can also sprinkle some of the juicer pulp right into the garden, where it will break down and feed the plants -- plus, birds love to peck at it!

Many of us have external battery chargers for our smartphones when the battery life is running low. They are convenient, since they can be recharged and serve as a backup power source when plugging your phone into a wall socket isn't an option. But what do you do with the external charger when it's time to replace it? Most rechargeable batteries can be used up to 1,000 times, but when they no longer hold a charge, be sure to recycle them. The nonprofit Call2Recycle program has thousands of free recycling boxes in stores like Best Buy, Lowe's and the Home Depot, where you simply drop them off. The batteries get stripped and recycled into new products.

Here's another reason to bring your workout outdoors instead of the gym: The treadmill is an energy hog. An average treadmill uses about 600 to 700 watts of energy per hour; that's equal to leaving a few large flat-screen TVs on at the same time. If you spend two or more hours a week walking on a treadmill, the carbon emissions would equal about 1 percent of a car's output. So if it's a nice day, why not go for a walk instead? And whenever possible, unplug the treadmill when not in use, since even in sleep mode, it still uses a small amount of energy.