Algae Naturally Produces Harmful Estrogen-like Compound

From "UT researchers link algae to harmful estrogen-like compound in water" in ScienceBlog:

University of Tennessee, Knoxville, researchers have found that blue-green algae may be responsible for producing an estrogen-like compound in the environment which could disrupt the normal activity of reproductive hormones and adversely affect fish, plants and human health. Previously, human activities were thought solely responsible for producing these impacts.

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