Sep 2 - By Seth Borenstein, AP Science Writer
The tropics seem to be going crazy what with the remnants of Gustav, the new threat from Hanna, a strengthening Ike and newcomer Josephine. Get used to it.

Aug 31 - By Frank Jordans, Associated Press Writer
The next U.S. president must show greater leadership than previous administrations in tackling climate change, the head of the United Nations said Sunday.
Aug 29 - By Seth Borenstein, AP Science Writer
The difference between a monster and a wimp for Gulf of Mexico hurricanes often comes down to a small patch of warm deep water that's easy to miss. It's called the Loop Current, and hurricane trackers say Gustav is headed right for it, reminiscent of Katrina.
Aug 28 - By Randolph E. Schmid, AP Science Writer
Roads and canals connected walled cities and villages. The communities were laid out around central plazas. Nearby, smaller settlements focused on agriculture and fish farming.
Aug 27 - By Brian Skoloff, Associated Press Writer
Tropical Storm Fay brought some good news to the state's parched Everglades and its liquid heart, Lake Okeechobee — lots and lots of water.
Aug 27 - By Associated Press
Purdue University on Wednesday reprimanded a scientist who has been accused of falsifying claims he produced nuclear fusion in tabletop experiments.

Aug 27 - By Malcolm Ritter, AP Science Writer
Talk about an extreme makeover: Scientists have transformed one type of cell into another in living mice, a big step toward the goal of growing replacement tissues to treat a variety of diseases.

Aug 27 - By Seth Borenstein, AP Science Writer
More ominous signs Wednesday have scientists saying that a global warming "tipping point" in the Arctic seems to be happening before their eyes: Sea ice in the Arctic Ocean is at its second lowest level in about 30 years.
Aug 27 - By Dan Joling, Associated Press Writer
Arctic Ocean sea ice has melted to the second lowest minimum since satellite observations began, according to scientists at the National Snow and Ice Data Center.
Aug 26 - By Associated Press
The plucky Mars rover Opportunity is driving out of a giant crater nearly a year after a dangerous descent to examine exposed bedrock.
Aug 25 - By Michael Rubinkam, STF
Nearly a year after federal epidemiologists first sounded the alarm over a cluster of rare blood cancers in northeastern Pennsylvania, their research has zeroed in on a hardscrabble region 80 miles northwest of Philadelphia that is home to several Superfund sites and a power plant fired by waste coal.

Aug 25 - By Randolph E. Schmid, AP Science Writer
Talk about animal magnetism, cows seem to have a built-in compass. No bull: Somehow, cattle seem to know how to find north and south, say researchers who studied satellite photos of thousands of cows around the world.
Aug 25 - By Randolph E. Schmid, AP Science Writer
For capuchin monkeys, it seems, it's better to both give and receive, than just to receive. At least, that's what researchers at the Yerkes National Primate Research Center at Emory University in Atlanta have found.
Aug 22 - By Associated Press
NASA destroyed an unmanned experimental rocket carrying a pair of research satellites Friday when it veered off course shortly after an early morning liftoff.
Aug 21 - By Dan Joling, Associated Press Writer
Nine polar bears were observed in one day swimming in open ocean off Alaska's northwest coast, an increase from previous surveys that may indicate warming conditions are forcing bears to make riskier, long-distance swims to stable sea ice or land.

Aug 21 - By Seth Borenstein, AP Science Writer
In northern Greenland, a part of the Arctic that had seemed immune from global warming, new satellite images show a growing giant crack and an 11-square-mile chunk of ice hemorrhaging off a major glacier, scientists said Thursday.

Aug 21 - By John Porretto, AP Business Writer
Powerful acoustic devices used by oil companies searching for new sources of hydrocarbons in the Gulf of Mexico have had no discernible effect on endangered sperm whales living in those waters, according to a federally funded study released Thursday.