NOAA researchers report the first long-distance migration of a killer whale. The brief trips of killer whales to tropical waters may assist with skin rejuvenation.
The fierce battle of rutting stags is a famous symbol of male animals competing over females. But it turns out the stags don't have things all their own way.
Colder than average temperatures in the stratosphere during 2011 caused a larger than average ozone hole above Antarctica, according to NASA and NOAA data.
The current phenomenon of Earth warming is unique from a historical, geological perspective since the end of the last Ice Age, says a Swedish researcher.