West Antarctic ice shelves tearing apart at the seams

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ScienceDaily: Earth Science News


New evidence that comets deposited building blocks of life on primordial Earth

Posted: 27 Mar 2012 06:56 PM PDT

New research provides further support for the idea that comets bombarding Earth billions of years ago carried and deposited the key ingredients for life to spring up on the planet.

West Antarctic ice shelves tearing apart at the seams

Posted: 27 Mar 2012 10:43 AM PDT

A new study examining nearly 40 years of satellite imagery has revealed that the floating ice shelves of a critical portion of West Antarctica are steadily losing their grip on adjacent bay walls, potentially amplifying an already accelerating loss of ice to the sea.

Air pollution from trucks and low-quality heating oil may explain childhood asthma hot spots

Posted: 27 Mar 2012 09:48 AM PDT

Where a child lives can greatly affect his or her risk for asthma. Neighborhood differences in rates of childhood asthma may be explained by varying levels of air pollution from trucks and residential heating oil. In New York City, where the study was conducted, asthma among school-age children ranges from a low of three percent to a high of 19 percent depending on the neighborhood.

Signs of thawing permafrost revealed from space

Posted: 27 Mar 2012 06:31 AM PDT

Satellite are seeing changes in land surfaces in high detail at northern latitudes, indicating thawing permafrost. This releases greenhouse gases into parts of the Arctic, exacerbating the effects of climate change. Permafrost is ground that remains at or below 0°C for at least two consecutive years and usually appears in areas at high latitudes such as Alaska, Siberia and Northern Scandinavia, or at high altitudes like the Andes, Himalayas and the Alps.
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