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First Plants Caused Ice Ages, New Research Reveals
New research reveals how the
arrival of the first plants
470 million years ago
triggered a series of ice
ages. The research reveals
the effects that the first
... > full story
Sea Cucumbers: Dissolving Coral Reefs?
Coral reefs are extremely
diverse ecosystems that
support enormous
biodiversity. But they are
at risk. Carbon dioxide
emissions are acidifying the
... > full story
Remote Wilderness Polluted by Humans
Nitrogen from human activity
has been polluting lakes in
the northern hemisphere
since the late 19th century.
The clear signs of
industrialization can be
found even in very remote
... > full story
Acid Rain Poses a Previously Unrecognized Threat to Great Lakes Sugar Maples
The number of sugar maples
in Upper Great Lakes forests
is likely to decline in
coming decades, according to
ecologists, due to a
... > full story
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Solutions for a Nitrogen-Soaked World
January 17, 2012 — Nitrogen is both an essential nutrient and a pollutant, a byproduct of fossil fuel combustion and a fertilizer that feeds billions, a benefit and a hazard, depending on form, location, and quantity. ... > full story -
Weather Deserves Medal for Clean Air During 2008 Olympics
December 28, 2011 — New research suggests that China's impressive feat of cutting Beijing's pollution up to 50 percent for the 2008 Summer Olympics had some help from Mother Nature. Rain just at the beginning and wind ... > full story -
Global Forests Are Overlooked as Water Suppliers, Study Shows
December 15, 2011 — The forests of the world supply a significant amount of moisture that creates rain. A new study reveals how this important contribution of forests to the hydrologic cycle is often overlooked in water ... > full story -
Sharp Decline in Pollution from U.S. Coal Power Plants, NASA Satellite Confirms
December 1, 2011 — A team of scientists have used the Ozone Monitoring Instrument on NASA's Aura satellite to confirm major reductions in the levels of a key air pollutant generated by coal power plants in the eastern ... > full story -
Acid Pollution in Rain Decreased With Emissions, Long-Term Study Shows
November 16, 2011 — Emissions regulations do have an environmental impact, according to a long-term study of acidic rainfall. A report detailing trends in acidic rainfall frequency and concentration over 25 years found ... > full story -
Tropical Forests Fertilized by Nitrogen Air Pollution, Scientists Find
November 3, 2011 — Scientists braved ticks and a tiger to discover how human activities have perturbed the nitrogen cycle in tropical forests. Studies at two remote Smithsonian Institution Global Earth Observatory ... > full story -
Loss of 'Lake Lawnmowers' Leads to Algae Blooms
September 28, 2011 — Unprecedented algae growth in some lakes could be linked to the decline of water calcium levels and the subsequent loss of an important algae-grazing organism that helps keep blooms at ... > full story -
Air Pollution Caused by Ships Plummets When Vessels Shift to Cleaner, Low-Sulfur Fuels, Study Finds
September 14, 2011 — New clean fuel regulations in California and voluntary slowdowns by shipping companies substantially reduce air pollution caused by near-shore ships, according to a new ... > full story -
Switching from Coal to Natural Gas Would Do Little for Global Climate, Study Indicates
September 8, 2011 — Although the burning of natural gas emits far less carbon dioxide than coal, a new study concludes that a greater reliance on natural gas would fail to significantly slow down climate change. Coal ... > full story -
Feeding Cows Natural Plant Extracts Can Reduce Dairy Farm Odors and Feed Costs
September 1, 2011 — With citizens' groups seeking government regulation of foul-smelling ammonia emissions from large dairy farms, scientists report that adding natural plant extracts to cow feed can reduce levels of ... > full story
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