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| Local Sources Major Cause of U.S. Near-Ground Aerosol Pollution
Most of the pollution found here in the U.S. is from local sources, and only a small portion is brought here from other countries.
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| NASA Data Reveals 'Average' Ozone Hole in 2007
NASA data reveal the extent of the hole in 2007 was about average when compared to measurements from the last few decades.
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| Drop in Arctic Sea Ice Raises Questions
Melting Arctic sea ice has shrunk to a 29-year low, significantly below the minimum set in 2005.
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| Greenland Snow Melting Hits Record High
A new NASA-supported study reports that 2007 marked an overall rise in the melting trend over the entire Greenland ice sheet.
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| Amazon Unexpectedly Resilient to Drought
A team of scientists using two NASA satellites has shown that one of the worst droughts in decades could not stop the Amazon forest from "greening up."
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| NASA Study Predicts More Severe Storms With Global Warming
NASA scientists have developed a new climate model that indicates that the most violent severe storms and tornadoes may become more common as Earth’s climate warms.
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| Long-Term Increase in Rainfall Seen in Tropics
NASA has detected the first signs that tropical rainfall is on the rise.
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| Scouting out Aerosols in Oklahoma
NASA Langley researchers use lidar to support Department of Energy field campaigns.
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