planetfrom the May 2007 issue of Men’s Health. No saving of cheerleaders necessary.

1. An hour of lawn mowing creates the pollution equivalent of driving a car 100 miles. Overseed your lawn with a slow-growing grass — fescue in northern climates, centipede in the Southeast, and so on — and you’ll cut your mowing frequency in half.

2. Incandescent lightbulbs exhaust 90 percent of their energy as heat.
If every U.S. household switched to compact fluorescent bulbs, it’d be like taking 2 million cars off the road.

3. The average mature tree sucks up 48 pounds of carbon dioxide a year and releases enough oxygen to sustain two people. Plus, if you plant them strategically — to cast shade on your house — you’ll reduce your annual energy costs by 10 to 35 percent. The National Arbor Day Foundation will send you 10 young trees with planing instructions for $10 (arborday.org)

4. The average piece of produce is trucked roughly 1,500 miles to your local supermarket.Find nearby sources at farmersmarketusa.org.

5. Trade your desktop computer for a laptop, which will use 50 percent to 75 percent less energy.

6. Forty percent of all electricity used to power TVs, DVD players, and other home electronics is consumed while the products are turned off but not unplugged. Plug everything into a power strip and switch it off at night.

7. Dont use screen savers
– those moving images consume $50 in electricity a year.

8. Keeping your tires properly inflated (check them monthly) and your air filter clean (change it at least every 12,000 miles) improves your vehicles fuel economy by 13 percent.