A U.S. district court judge in California recently issued a requirement for the U.S. Environmental Protection Agency (EPA) to re-examine optimal fluoride levels in drinking water, but there are scientific reasons to continue the practice.

There's a debate many have very strong opinions on - whether or not to brush your teeth in the shower.

Colgate's upcoming Super Bowl ad, simply entitled "Save Water", will encourage consumers to turn off the faucet while brushing their teeth.