Know where to go: Nearly every household has some kind of hazardous waste: rechargeable batteries, old paint cans, used motor oil, unused pesticides and weed killers. If you dump these things, or put them down the drain, you'll end up polluting --- possibly even your own water supply! Items like these should be disposed of in a site specially designed for hazardous or toxic wastes. Call your city or county government to find out the proper way to dispose of such trash in your area.
Recycle smart: Go to earth911.org to find community-specific resources, with a focus on recycling. Check out the home page to find out where you can recycle your computer, your cell phone, and even used motor oil.
Reuse, reuse, reuse: Reusing items helps products find a second (or third, or tenth, or one hundredth) use to prolong its life - which also saves money. Craigslist, eBay, FreeCycle or Goodwill are all great places to go online or to shop.