From the backyard to the ocean: New study shows streams act as key nitrogen filters

As spring arrives across the country, tourists returning to beaches will face the reality of "red tide" -- harmful blooms of algae that make water unfit for swimming and pose risks to humans and sea life.

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<p><a href="http://www.physorg.com/news124547549.html">From the backyard to the ocean: New study shows streams act as key nitrogen filters</a></p> <p>As spring arrives across the country, tourists returning to beaches will face the reality of "red tide" -- harmful blooms of algae that make water unfit for swimming and pose risks to humans and sea life.</p>