AP - The Earth is running a slight fever from greenhouse gases, after enjoying relatively stable temperatures for 2,000 years. The National Academy of Sciences, after reconstructing global average surface temperatures for the past two millennia, said Thursday the data are "additional supporting evidence ... that human activities are responsible for much of the recent warming."

AP - Antique book collectors might want to read up on genetic mutations before determining the age of an undated find. A Penn State biology professor with a passion for old prints and maps says he has found a new way to date centuries-old books by using a technique similar to what scientists use to study mutations.

AP - Blasts from undersea airguns fired by boats searching for oil could harm whales and should be studied further, said a report unanimously endorsed Monday by the International Whaling Commission.

AP - This could be the shape of things to come in crimefighting. In the months ahead, the Los Angeles County Sheriff's Department will test an unmanned, remote-controlled surveillance plane.

Reuters - Torrential rains sparked flash floods across Houston on Monday that engulfed homes and snarled traffic, and weather forecasters warned new storms overnight could bring even worse flooding.