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2014 BioBlitz BobCast: Healthy Bugs, Healthy Streams

An important way to tell if a stream is healthy is to look at the insects that live there. If there are lots of them, and there's a variety of species, then the water is probably clean. In this fifth video blog from the 2014 BioBlitz in Golden Gate National Parks, EPA field biologist Peter Husby conducts an inventory of a stream in Muir Woods.

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AAAS