A really important thing all of us can do for the environment is to lessen our dependence on disposable plastic, especially those ubiquitous white plastic grocery bags.  The amount of water and energy we could save by bringing resubable shopping bags with us to the store would be phenomenol.  Always remember to put your reusable bags back in the car right after getting home from the store.  Search the web for resuable shopping bags or reusable bags that you want to keep with you at all times.