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Advanced power-grid research finds low-cost, low-carbon future in West
The least expensive way for the Western U.S. to reduce greenhouse gas emissions enough to help prevent the worst consequences of global warming is to replace coal with renewable and other sources of energy that may include nuclear power. (2012-04-04)

New Study Confirms Low Levels of Fallout from Fukushima and Enhances Knowledge
Fallout from the 2011 Fukushima Dai-ichi nuclear power facility in Japan was measured in minimal amounts in precipitation in the United States in about 20 percent of 167 sites sampled in a nationwide study released today. (2012-02-23)

AGU: Oil sands pollution comparable to a large power plant
It takes a lot of energy to extract heavy, viscous and valuable bitumen from Canada's oil sands and refine it into crude oil. Companies mine some of the sands with multi-story excavators, separate out the bitumen, and process it further to ease the flow of the crude oil down pipelines. (2012-02-23)

Global Extinction: Gradual Doom Is Just As Bad As Abrupt
A painstakingly detailed investigation shows that mass extinctions need not be sudden events. The deadliest mass extinction of all took a long time to kill 90 percent of Earth's marine life, and it killed in stages, according to a newly published report. (2012-02-06)

Could Siberian volcanism have caused the Earth's largest extinction event?
Around 250 million years ago, at the end of the Permian geologic period, there was a mass extinction so severe that it remains the most traumatic known species die-off in Earth's history. (2012-01-10)

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 University of Michigan ecologists and their colleagues, due to a previously unrecognized threat from a familiar enemy: acid rain. (2011-12-16)

Massive volcanoes, meteorite impacts delivered one-two death punch to dinosaurs
A cosmic one-two punch of colossal volcanic eruptions and meteorite strikes likely caused the mass-extinction event at the end of the Cretaceous period that is famous for killing the dinosaurs 65 million years ago. (2011-11-18)

Long-term study shows acid pollution in rain decreased with emissions
Emissions regulations do have an environmental impact, according to a long-term study of acidic rainfall by researchers at the University of Illinois. (2011-11-17)

Switching from coal to natural gas would do little for global climate, study indicates
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. The study appears this week in the Springer journal Climatic Change Letters. (2011-09-09)

New Strategy Aims to Reduce Agricultural Ammonia
As concerns about air pollution from large dairies and other concentrated animal feeding operations (CAFOs) continue to mount, scientists are reporting a practice that could cut emissions of an exceptionally abundant agricultural gas-ammonia-by up to 30%. (2011-05-12)