Communities across the country are grappling with questions about what to do with their older buildings. While we generally think that preserving historic buildings is a way to honor our past, it’s time to understand that it is also a way to protect our future, says Richard Moe, President of the National Trust for Historic Preservation.

Much attention about reducing greenhouse gas emissions is focused on cars, trucks, trains and airplanes. But according to the Pew Center on Climate Change, the transportation sector accounts for 32% of America's carbon dioxide emissions, while well over 40% of our carbon emissions are produced by the construction and operation of buildings.

We must realize that any solution to climate change must include new construction and the continued use and retrofit of our existing buildings. That’s where historic preservation can play a significant role.

Creating A Green and Healthy Home: Clear The Air

• Ban smoking: The number one way to combat indoor air pollution is to never let anyone smoke in your home, experts tell WebMD. "It's like inviting a diesel bus into your living room," says Gina Solomon, MD, PhD, a senior scientist at the Natural Resources Defense Council and an associate clinical professor of medicine at the University of California, San Francisco. "Cigarettes are full of toxic chemicals, and secondhand smoke exposure can cause cancer. It's a no-brainer. No smoking at home."

• Grow plants indoors: Live plants around your home act as natural air filters, and some plants are particularly effective absorbers of harmful pollutants emitted from carpets, furniture, and electronic equipment. So clean your indoor air and "green" your living space by filling your home with spider plants, Boston ferns, rubber plants, and palm trees.

• Install a carbon monoxide detector: Carbon monoxide is an odorless gas and exposure to it can be deadly. To prevent carbon monoxide poisoning, pick-up a detector at your local hardware store.

• Check for radon: Radon is a radioactive gas that is naturally present in soil, and it can enter your home through cracks in your foundation. Radon is also the second leading cause of lung cancer in the US, according to the National Academy of Sciences. Radon test kits are available at most hardware stores.

• Switch to compact fluorescent light bulbs: These bulbs - now available to fit many light fixtures - use just a quarter of the electricity of regular incandescent bulbs. Plus, they last up to ten times longer, Yarrow says in 1,001 Ways to Save the Earth.

• Turn off the lights: If you or others in your household are forgetful, install movement sensors so lights only activate when needed. Another way to save energy is to install automatic timers for lights frequently left blazing in empty rooms.

• Set cooling and heating temperatures correctly: Your refrigerator and freezer are probably the biggest electrical energy consumers in your house. Take steps to make sure they're not working harder than necessary. Fridges do their job at around 37 degrees Fahrenheit. Freezers set at minus 3 keep things nice and frosty. Be sure to close the fridge and freezer doors. Leaving them open for just a few extra seconds wastes a lot of energy. Get an electronic thermostat so your furnace heats your home to a lower temperature while the family sleeps and returns it to a toastier temperature before you get out of bed. In the winter, set your thermostat at 68 degrees in the day and 55 degrees at night. In the summer, keep it at 78. Water heaters work most efficiently between 120 and 140 degrees.

• Get unplugged: Electronic appliances, including TVs, computers, and CD players can consume almost as much energy when in standby mode as they do during the relatively small amount of time they're being used.
Use appliances efficiently: Wait for a full load before turning on the washing machine, dryer, or dishwasher. Clear the lint filter after every dryer load and air-dry clothes when weather allows. Use the air-dry function on your dishwasher. Preheat your oven only when necessary.

• Let the sun shine: The cheapest and most environmentally sound heat and light source is just outside your window. Open blinds, drapes, and shutters to let solar energy warm and brighten your home naturally.
Stop leaks: Plug, insulate, replace, repair, caulk, or seal to make your home as leak-proof as possible - and watch your utility bills drop.