Zambia denied on Thursday that an acid spill in its copper-mining region six months ago still posed a serious health risk, a day after the U.S. embassy restricted travel to the area for U.S. officials ...

After an air-quality agreement Canada signed in the 1990s, P.E.I.'s precipitation no longer falls into the range of acid rain ...

Move over apples and bananas, lemons are now the healthiest fruit. William Paterson University research reveals lemons top nutritional charts. They ar ...