Pollution Threatens Endangered Turtles With Imbalanced Sex Ratio, Warns Study

Hatchlings of the green sea turtle, Chelonia mydas, on Heron Island, Australia. An endangered species of turtle faces a new threat from pollution - as it may lead to an excess of females being born, warns new research. PHOTO BY ARTHUR D.BARRAZA/SWNS 

An endangered species of turtle faces a new threat from pollution – as it may lead to an excess of females being born, warns new research.

Heavy metals appear to mimic female sex hormones – feminizing broods of green sea turtles, say scientists.