News tagged with levels

Thawing permafrost feeds climate change

Carbon, held in frozen permafrost soils for tens of thousands of years, is being released as Arctic regions of the Earth warm and is further fueling global climate change, according to a Florida State University ...

dateApr 23, 2015 in Earth Sciences
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Microbes help produce serotonin in gut

Although serotonin is well known as a brain neurotransmitter, it is estimated that 90 percent of the body's serotonin is made in the digestive tract. In fact, altered levels of this peripheral serotonin have ...

dateApr 09, 2015 in Cell & Microbiology
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Mercury pollution danger for arctic ivory gulls

A paper in Proceedings of the Royal Society B today says that mercury levels in arctic ivory gulls have risen almost 50 fold over the last 130 years. Scientists think this increase in mercury pollutants could ...

dateMar 20, 2015 in Ecology
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