Summary
McLEAN, Va. - Some species of male fish in the Potomac River and its tributaries are developing female sexual traits at a frequency higher than scientists have seen before, raising concerns about pollutants in a waterway that provides drinking water for millions of people.
The so-called "intersex fish," which produce immature eggs in their testes, were discovered in the Potomac rivershed in West Virginia in 2003 and have also been found in other parts of the country.See the full content of this document
Extract
'Intersex Fish' Raising Concerns
But the frequency that the U.S. Geological Surveys found last year is much highe...
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