Biologists Find Evidence of Migration Gene in Birds

Biologists Find Evidence of Migration Gene in Birds

Millions of migratory birds occupy seasonally favorable breeding grounds in the Arctic, but scientists know little about the formation, maintenance and future of the migration routes of Arctic birds and the genetic determinants of migratory distance. In new research, a multinational team of researchers established a continental-scale migration system that used satellite tracking to follow […]

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Mysterious California sea lion deaths linked to toxic synthetic chemicals

Mysterious California sea lion deaths linked to toxic synthetic chemicals

Sea lions in California had been dying of a mysterious cancer for decades. Now, scientists say they have finally uncovered the likely cause: toxic chemicals from industrial trash, pesticides and oil refinery waste. A team of mammal pathologists, virologists, chemists and geneticists have concluded that sea lions with higher concentrations of DDT, PCBs and other […]

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