News tagged with levels

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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Ocean 'dead zones' a growing disaster for fish

Falling ocean oxygen levels due to rising temperatures and influence from human activities such as agrochemical use is an increasingly widespread problem. Considering that the sea floors have taken more than 1,000 years to recover from past eras of low ox ...

dateApr 09, 2015 in Earth Sciences
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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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