The concentration of carbon dioxide in the atmosphere has reached a record high, according to the latest figures released by an internationally regarded measuring station in the Arctic.
Among the most productive oil fields in the United States, Elk Hills Oil Field in California presents a complicated surface in this image from March 7, 2009.
Distinctive lines of clouds that mirror the shape of the shore hang over the Aral Sea in this photo-like image.
Scientists find the signal of a decline in the numbers of insects in Chernobyl’s exclusion zone, 20 years after the nuclear accident.
Winding up a three-day meeting this week, the International Whaling Commission signaled what conservationists see as a dangerous change of course that jeopardizes the future of the world’s whales.