News tagged with nutrient cycling

The oldest evidence of bioturbation on Earth

The Ediacaran Period, an interval in Earth's history after the Snowball Earth glaciations but before the Cambrian radiations, marks the introduction of complex macroscopic organisms synchronously in unrelated groups. It has ...

dateMar 20, 2012 in Earth Sciences
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How ammonia affects city's air

( -- Motor vehicles and industry are primary producers of ammonia in Houston's atmosphere, and cars and trucks appear to boost their output during the winter, according to a new study by researchers at Rice University ...

dateOct 11, 2011 in Earth Sciences
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