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Tuesday, May 22, 2012 | 1:21 p.m.

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FILE - In this April 13, 2011 file photo, visitors to the American Museum of Natural History in New York inspect a detailed model of a 60-foot-long Mamenchisaurus  on display during the media preview of "The World's Largest Dinosaurs'" exhibit.   The exhibition on view at the American Museum of Natural History from April 16, 2011, through January 2, 2012, explores the biology of a group of uniquely super-sized dinosaurs: the long-necked and long-tailed sauropods.  And a new study in the journal Current Biology suggests that sauropods produced enough methane, through burps and flatulence, that it helped keep an already warm Earth warmer.  (AP Photo/Mary Altaffer, File) Visitors to the American Museum of Natural history inspect a detailed model of a 60-foot-long Mamenchisaurus  on display during the media preview of "The Worldís Largest Dinosaurs'" exhibit, Wednesday, April 13, 2011 in New York.   The exhibition on view at the American Museum of Natural History from April 16, 2011, through January 2, 2012, explores the biology of a group of uniquely super-sized dinosaurs: the long-necked and long-tailed sauropods.  (AP Photo/Mary Altaffer)

Excuse me: Gassy dinosaurs helped warm Earth

Potty humor just got prehistoric. A new study suggests that dinosaurs may have helped keep an already overheated world warmer with their flatulence and burps 200 million years ago. The research published Monday in Current Biology suggests that large dinosaurs made a significant contribution to the greenhouse effect back then. ...

WWU biologist: Plant diversity key to ecosystem

A Western Washington University biologist says global climate change and pollution are not the only major problems threating the environment. The loss of plant diversity may be just as dangerous. Professor David Hooper shared his perspective at a workshop in California at the National Center for Ecological Analysis and Synthesis, ...

As Japan shuts down nuclear power, emissions rise

The Fukushima crisis is eroding years of Japanese efforts to reduce greenhouse gas emissions blamed for global warming, as power plants running on oil and natural gas fill the electricity gap left by now-shuttered nuclear reactors. Before last year's devastating tsunami triggered meltdowns at the Fukushima Dai-ichi plant, Japan had ...

FILE - In this July 19, 2011 file photo, a large melt pool forms in the Ilulissat ice fjord below the Jakobshavn Glacier, at the fringe of the vast Greenland ice sheet. Greenland's glaciers are hemorrhaging ice at an increasingly faster rate, but it's not the breakneck pace scientists once feared, a new study says. (AP Photo/Brennan Linsley, File)

Greenland losing ice fast, but not runaway pace

Greenland's glaciers are hemorrhaging ice at an increasingly faster rate but not at the breakneck pace that scientists once feared, a new study says. The loss of ice from the glaciers that cover the island is about 30 percent faster than it was a decade ago, researchers said. That means ...

Goodbye La Nina: Will drought, hurricanes also go?

The La Nina weather phenomenon is over. Forecasters say that's good news for the drought in the South and hurricane areas along the coasts. The National Weather Service pronounced the two-year La Nina (NEEN'-yah) finished on Thursday. La Nina is the flip side of El Nino (NEEN'-yoh) and is caused ...

Bernalillo County Commissioner Wayne Johnson, right, talks to U.S. Forest Service Chief Tom Tidwell, left, and Regional Forester Corbin Newman, center, about wildfire response after a news conference at the Sandia Ranger Station in Tijeras, N.M on Thursday, April 26, 2012. Federal officials expect the 2012 season to be just as active as last year, when historic fires charred hundreds of square miles across parts of Arizona, New Mexico and Texas. (AP Photo/Susan Montoya Bryan)

Feds prepare for another busy US fire season

More than 100 large fires have swept across parts of the nation already this year, and the head of the U.S. Forest Service said Thursday the rest of the 2012 fire season is expected to be just as active as last year's, which saw historic wildfires on hundreds of square ...

Study: Antarctic ice melting from warm water below

Antarctica's massive ice shelves are shrinking because they are being eaten away from below by warm water, a new study finds. That suggests that future sea levels could rise faster than many scientists have been predicting. The western chunk of Antarctica is losing 23 feet of its floating ice sheet ...

In '72, EPA battled pollution; now it's politics

A polluted drainage ditch that once flowed with industrial waste from Lake Charles, La., petrochemical plants teems with overgrown, wild plants today. A light-rail line zips past the spot where a now-defunct Portland, Ore., gasoline station advertised in 1972 that it had run out of gas. A smoking Jersey City, ...

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