If your water tastes like it's been sitting in an old frying pan and your white laundry has acquired an orange-ish "patina," you have rusty water, otherwise known as water with a lot of iron in it.

As scientists endeavor to increase the efficiency of solar panels, the challenge of storing the resultant energy cheaply and in an environmentally responsible way must also be met. To this end, ...

Our bathrooms are like a magnet for stubborn stains. No matter how often you clean, hard water spots, rust, and soap scum always seem to make a comeback. If you’ve ever spent half an hour scrubbing ...