The refrigerator is one of the biggest energy hogs in the house, so it’s key to make sure it runs efficiently to save electricity and money. If you don’t use your automatic ice maker often, consider turning it off. A study by Time magazine found that the average ice maker increases energy usage by 12% to 20%. By turning it off, you’ll significantly improve efficiency. If you want ice, consider filling silicone ice cube trays with water and using them instead of an automatic ice maker.

ANDREWS MCMEEL SYNDICATION

For long-distance driving on roads with very little traffic, it’s always a good idea to use the cruise-control function on your vehicle. By helping your car maintain a continuous speed, cruise control takes acceleration out of your hands, which saves gas over time. In fact, studies have shown that cruise control (when used properly) can save about 7% to 14% in fuel usage versus driving yourself. But never use cruise control in wet or icy conditions.

ANDREWS MCMEEL SYNDICATION

Sitting in traffic on the highway wastes more than just time to get to your destination. Numerous studies have shown that the environmental impact is huge -- massive amounts of petroleum are wasted as cars sit idle, and air pollution increases significantly with nitrous oxides and particulates polluting the air. To avoid traffic, use a GPS, take alternate routes and travel during off-peak hours. One more seemingly minor adjustment: Signal when changing lanes. Studies show signaling early allows other drivers to adjust their speed and position, which helps prevent traffic jams.

ANDREWS MCMEEL SYNDICATION