02 May '11, 10pm

Arctic Sea Ice [image] #NASA

Arctic Sea Ice [image] #NASA

Layers of frozen sea water, known as sea ice, cap the Arctic Ocean. The ice grows dramatically each winter, and melts just as dramatically each summer. In the past decade, the melting has grown more dramatic, while growth has become less so, as you can see in our World of Change feature. The pair of images above shows Arctic sea ice concentrations for September 2010 (left) and March 2011. The yellow outline shows the median sea ice extent observed by satellite sensors in September and March from 1979–2000. “Extent” is the total area with an ice concentration of at least 15 percent. The maps were compiled from observations by the Defense Meteorological Satellite Program and by the Advanced Microwave Scanning Radiometer for EOS (AMSR-E), on NASA’s Aqua satellite. The sensors measure microwave energy radiated from Earth’s surface, as sea ice and open water emit microwaves dif...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=50365&s...

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A very dusty day yesterday over the Red Sea. The view from NASA's Aqua Earth-observing satellite.

A very dusty day yesterday over the Red Sea. Th...

earthobservatory.nasa.gov 03 May '11, 1am

Dust blew over the Red Sea on May 2, 2011. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satell...

On Thin Ice: Report identifies 13 vulnerable Ar...

switchboard.nrdc.org 27 Apr '11, 2pm

Off the shores of St. Lawrence Island in the frigid Bering Sea, Pacific walruses use their sensitive whiskers to find food...

Northwest Greenland Canyons [image] #NASA

earthobservatory.nasa.gov 30 Apr '11, 10pm

Launched in March 2009, NASA’s IceBridge mission is the world’s largest airborne survey of polar ice. The mission is aimed...

Astronaut photo from last month shows the twist...

earthobservatory.nasa.gov 03 May '11, 5pm

The Paraná River is South America’s second largest, and the river and its tributaries are important transportation routes ...

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grist.org 05 May '11, 4pm

Yes, that Mexican-flavored shredded cheese mix, found right next to the Kraft singles, makes awesome quesadillas. But litt...

News: Climate Change: Not Urgent Enough For The...

earthjustice.org 06 May '11, 10pm

Who: U.S. Secretary of State Hillary Clinton and Interior Secretary Ken Salazar will join top government officials from Ca...

Here are some stunning pictures of the #Arctic we need to protect

Here are some stunning pictures of the #Arctic ...

greenpeace.org.uk 22 Apr '11, 8am

As our action against Cairn's Arctic-bound oil rig gets underway, there's no better time to remind us all of what's at sta...

Vulnerable Arctic Areas Need Protection as Regi...

e360.yale.edu 27 Apr '11, 5pm

27 Apr 2011: Vulnerable Arctic Areas Need Protection as Region Warms, Report Says A new report identifies 13 areas of the ...

Flooding in Memphis as seen yesterday from Land...

earthobservatory.nasa.gov 11 May '11, 1am

The Mississippi River reached 47.87 feet (14.59 meters) in Memphis, Tennessee, on May 10, 2011, according to the Advanced ...

NASA image reveals extent of deforestation in western Brazil

NASA image reveals extent of deforestation in w...

news.mongabay.com 04 May '11, 4pm

NASA image reveals extent of deforestation in western Brazil Jeremy Hance mongabay.com May 04, 2011 Top image shows defore...