If you own a car, check and replace the air filter regularly. A clogged air filter chokes...

This is a sort of natural power plant. It's a group of many wind turbines located together in an area that gets steady wind (in open, rural spaces, near mountain passes, even in offshore locations). The turbines collect the wind's energy and convert it to electricity, which can then be sold to the local utility grid. Wind is a renewable, virtually pollution-free source of electricity.

Of all the places where water is wasted in the house, the irritating drip from your faucet...