In field or backyard, frogs face threats

Amphibians and other sensitive groups encounter chemicals across the landscape

By Susan Milius, 08:08 AM August 26, 2010

Providence, R.I. — Frogs in the pond have become canaries in the coal mine. As amphibian populations have declined worldwide, concerns have risen about the potential environmental effects of agricultural pesticides and other chemicals. And recent work is challenging existing ideas of what environs and organisms are at risk.

After almost a decade of hot debate over whether atrazine, a common agricultural weed killer (SN: 2/27/10, p. 18), is creating frogs with both male and female characteri...

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