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.

Mar 05, 2013
4.9 / 5 (14) 0 | with audio podcast

Ice shelves disappearing on Antarctic Peninsula

Ice shelves are retreating in the southern section of the Antarctic Peninsula due to climate change. This could result in glacier retreat and sea-level rise if warming continues, threatening coastal communities ...

Feb 22, 2010
3.7 / 5 (18) 21 | with audio podcast

Rare earth elements in US not so rare: report

Approximately 13 million metric tons of rare earth elements (REE) exist within known deposits in the United States, according to the first-ever nationwide estimate of these elements by the U.S. Geological Survey.

Nov 17, 2010
4.8 / 5 (11) 21 | with audio podcast

Ocean warming affecting Florida reefs

Late-summer water temperatures near the Florida Keys were warmer by nearly 2 degrees Fahrenheit in the last several decades compared to a century earlier, according to a new study by the U.S. Geological Survey.

Sep 10, 2014
3.9 / 5 (8) 3

Unexplored Arctic region to be mapped

A scientific expedition this fall will map the unexplored Arctic seafloor where the U.S. and Canada may have sovereign rights over natural resources such as oil and gas and control over activities such as mining.

Sep 03, 2008
4.7 / 5 (6) 0

Climate change implicated in decline of horseshoe crabs

A distinct decline in horseshoe crab numbers has occurred that parallels climate change associated with the end of the last Ice Age, according to a study that used genomics to assess historical trends in population sizes.

Aug 30, 2010
4 / 5 (6) 0