Cities and Sites
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Earth Hour Celebrations Around the World: Photos
Posted Tue Apr 3, 2012 10:00 AM ET | 0
On the last Saturday of March, at 8:30 p.m. local time, cities around the world participated in Earth Hour in recognition of climate change and the need to curb carbon emissions. Read more
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City Lights Spike Air Pollution
Posted by Irene Klotz Fri Dec 17, 2010 11:35 AM ET | 0
Artificial lights block formation of molecules that bond with air pollutants to clear the air. Read more
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Los Angeles 'Big One' Could Come Sooner Than Expected: Study
Posted Fri Aug 20, 2010 08:58 PM ET | 0
Strong earthquakes along the San Andreas fault are a lot more frequent than previously thought. Read more
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