Pay attention to how you use water. The little things can make a big difference. Every time you turn off the water while you're brushing your teeth, you're doing something good. Got a leaky toilet? You might be wasting 200 gallons (757 liters) of water a day [source: EPA]. Try drinking tap water instead of bottled water, so you aren't wasting all that packaging as well. Wash your clothes in cold water when you can. Walk or ride your bike to work, school and anywhere you can. You can reduce greenhouse gases while burning some calories and improving your health. If you can't walk or bike, use mass transit or carpool. Every car not on the road makes a difference.
