United States Geological Survey

Iowa meteorite crater confirmed

(Phys.org) —Recent airborne geophysical surveys near Decorah, Iowa are providing an unprecedented look at a 470- million-year-old meteorite crater concealed beneath bedrock and sediments.

dateMar 05, 2013 in Earth Sciences
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Las Vegas holds key to abrupt climate change

According to new U.S. Geological Survey research published today in the Proceedings of the National Academy of Sciences, springs and marshes in the desert outside Las Vegas expanded and contracted dramatically in response ...

dateNov 10, 2015 in Earth Sciences
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The science of sinkholes

A devastating sinkhole occurred in Florida on February 28, 2013, raising questions and concerns about this incredible phenomenon. Around 20% of the U.S. lies in areas susceptible to sinkhole events, highlighting the need ...

dateMar 06, 2013 in Earth Sciences
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Dam removal study reveals river resiliency

More than 1000 dams have been removed across the United States because of safety concerns, sediment buildup, inefficiency or having otherwise outlived usefulness. A paper published today in Science finds that rivers are resilient ...

dateApr 30, 2015 in Environment
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Front-row seats to climate change

By day, insects provide the white noise of the South, but the night belongs to the amphibians. In a typical year, the Southern air hangs heavy from the humidity and the sounds of wildlife.

dateMay 17, 2013 in Plants & Animals
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