In 2001, scientists began adding tiny amounts of synthetic estrogen to an Ontario lake; within the next two years, its fathead minnow population collapsed
A seven-year whole-lake experiment in northwestern Ontario examined how chronic exposure to the synthetic estrogen 17α-ethynylestradiol (EE2) affected fathead minnows. Scientists added small amounts of EE2 to Lake 260 during three open-water seasons beginning in 2001. The exposure increased vitellogenin responses, affected gonadal development, and produced reproductive changes in both…
The Economic Times ·