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ScienceDaily: Earth Science News

Southwest U. S. may face 'megadrought' this century

Due to global warming, scientists say, the chances of the southwestern United States experiencing a decade long drought is at least 50 percent, and the chances of a “megadrought” – one that l...

Pacific plate shrinking as it cools

The Pacific tectonic plate is not as rigid as scientists believe, according to new calculations. Scientists have determined that cooling of the lithosphere -- the outermost layer of Earth -- makes ...

Composition of Earth's mantle revisited

The makeup of Earth's lower mantle, which makes up the largest part of the Earth by volume, is significantly different than previously thought, research suggests. This should shed light on unexplai...

Existing power plants will spew 300 billion more tons of carbon dioxide during use

Existing power plants around the world will pump out more than 300 billion tons of carbon dioxide over their expected lifetimes, significantly adding to atmospheric levels of the climate-warming ga...

Natural methane seepage on U.S. Atlantic ocean margin widespread

Natural methane leakage from the seafloor is far more widespread on the U.S. Atlantic margin than previously thought, according to a study by researchers from Mississippi State University, the U.S....

'Just right' plant growth may make river deltas resilient

Geologists suggest that an intermediate amount of vegetation -- not too little and not too much -- is most effective at stabilizing freshwater river deltas. Vegetation on marsh surfaces in river de...

NASA scientists watching, studying Arctic changes this summer

As we near the final month of summer in the Northern Hemisphere, NASA scientists are watching the annual seasonal melting of the Arctic sea ice cover. The floating, frozen cap that stretches across...

Nanoparticle research could enhance oil recovery, tracing of fracking fluid

Researchers are examining how nanoparticles move underground, knowledge that could eventually help improve recovery in oil fields and discover where hydraulic fracking chemicals travel.<img src=...

Sunlight, not microbes, key to carbon dioxide in Arctic

The vast reservoir of carbon stored in Arctic permafrost is gradually being converted to carbon dioxide after entering the freshwater system in a process thought to be controlled largely by microbi...

Severe drought is causing the western US to rise like a spring uncoiling

The severe drought gripping the western United States in recent years is changing the landscape well beyond localized effects of water restrictions and browning lawns. Scientists have used GPS data...