As Fertility Rates Fall, Some Scientists Say Everyday Chemicals Are a Factor

Researchers in Siberia are conducting tests on a juvenile mammoth whose remarkably well-preserved remains were discovered in thawing permafrost after more than 50,000 years. The carcass, weighing more than 110 kg (240 pounds), was brought to the surface on an improvised stretcher, said Maxim Cherpasov, head of the Lazarev Mammoth Museum Laboratory in the city of Yakutsk. It is the latest of a series of spectacular discoveries in the Russian permafrost.