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Mercury pollution danger for arctic ivory gulls

A paper in Proceedings of the Royal Society B today says that mercury levels in arctic ivory gulls have risen almost 50 fold over the last 130 years. Scientists think this increase in mercury pollutants could ...

dateMar 20, 2015 in Ecology
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Progeny of old parents have fewer offspring

Reproduction at old age involves risks that may impact one's own life and may impose reduced biological fitness on the offspring. Such evidence, previously obtained in humans and other taxa under laboratory ...

dateMar 09, 2015 in Evolution
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Coyotes filling wolves' niche in southeastern US

It's believed that wolves once roamed the southeastern United States before they were eliminated by overhunting and habitat loss. Now the region has a new top dog, the coyote, which may fill the role once ...

dateMar 26, 2015 in Ecology
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Elusive mouse edges close to extinction

A University of Queensland researcher who has caught the endangered northern hopping mouse on camera for the first time believes the tiny mammal could be closer to the brink of extinction than previously ...

dateMar 23, 2015 in Ecology
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