The website for the documentary, An Inconvenient Truth, has a list of things you can do right now to reduce the amount of carbon dioxide and other greenhouse gasses that are released into the atmosphere. (If you have not seen the movie, its definitely worth watching. I can get a copy to you if you can't get one for some reason).
Most on the tips on the website will also save you money because you will be using less and demanding less energy.
http://www.climatecrisis.net/Click on the Take Action link. Here is a sample of what you can start doing immediately to make a difference. You don't have to do all of them at once, just start small:
Replace a regular incandescent light bulb with a compact fluorescent light bulb (cfl)
CFLs use 60% less energy than a regular bulb. This simple switch will save about 300 pounds of carbon dioxide a year. If every family in the U.S. made the switch, we’d reduce carbon dioxide by more than 90 billion pounds! You can buy these at Target, Home Depot and even drug stores carry them. (Bring them back to Home Depot when they burn out, there is Mercury in them that shouldn't be dumped into landfills).
Turn off electronic devices you’re not using
Simply turning off your television, DVD player, stereo, and computer when you’re not using them will save you thousands of pounds of carbon dioxide a year.
Be sure you’re recycling at home. You can save 2,400 pounds of carbon dioxide a year by recycling half of the waste your household generates.
Plant a tree
A single tree will absorb one ton of carbon dioxide over its lifetime. Shade provided by trees can also reduce your air conditioning bill by 10 to 15%.
Avoiding just 10 miles of driving every week would eliminate about 500 pounds of carbon dioxide emissions a year! Sharing a ride with someone just 2 days a week will reduce your carbon dioxide emissions by 1,590 pounds a year.
Keep your car tuned up
Regular maintenance helps improve fuel efficiency and reduces emissions. When just 1% of car owners properly maintain their cars, nearly a billion pounds of carbon dioxide are kept out of the atmosphere. Proper tire inflation can improve gas mileage by more than 3%. Since every gallon of gasoline saved keeps 20 pounds of carbon dioxide out of the atmosphere, every increase in fuel efficiency makes a difference!
Move your thermostat down 2° in winter and up 2° in summer
Almost half of the energy we use in our homes goes to heating and cooling. You could save about 2,000 pounds of carbon dioxide a year with this simple adjustment.
Buy recycled paper products
It takes less 70 to 90% less energy to make recycled paper and it prevents the loss of forests worldwide.
Clean or replace filters on your furnace and air conditioner
Cleaning a dirty air filter can save 350 pounds of carbon dioxide a year
Avoid heavily packaged products
You can save 1,200 pounds of carbon dioxide if you cut down your garbage by 10%.
Eat less meat
Methane is the second most significant greenhouse gas and cows are one of the greatest methane emitters. Their grassy diet and multiple stomachs cause them to produce methane, which they exhale with every breath.
Choose energy efficient appliances when making new purchases
Look for the Energy Star label on new appliances to choose the most efficient models. If each household in the U.S. replaced its existing appliances with the most efficient models available, we’d eliminate 175 million tons of carbon dioxide emissions every year!
Fly less
Air travel produces large amounts of emissions so reducing how much you fly by even one or two trips a year can reduce your emissions significantly. You can also offset your air travel by investing in renewable energy projects.
