07 Jul '11, 6pm

Modern polar bears are really from Ireland, new research reveals via @jaymiheimbuch

Modern polar bears are really from Ireland, new research reveals via @jaymiheimbuch

Photo by Daniel J. Cox/NaturalExposures.com Brown Bears and Polar Bears Met Often during Last 100,000 Years A team of scientists discovered that the female ancestor to all modern polar bears was actually a species of brown bear living in Britain and Ireland just before the last ice age. The hybridization occurred between 20,000 and 50,000 years ago, and the species of brown bear has been extinct for the last 9,000 years. According to the press release , "Beth Shapiro, the Shaffer Associate Professor of Biology at Penn State University and one of the team's leaders, explained that climate changes affecting the North Atlantic ice sheet probably gave rise to periodic overlaps in bear habitats. These overlaps then led to hybridization, or interbreeding -- an event that caused maternal DNA from brown bears to be introduced into polar bears." Researchers once thought that the fe...

Full article: http://www.treehugger.com/files/2011/07/modern-polar-bear...

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It’s gettin’ (really, really) hot in here: via @grist

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justluxe.com 08 Jul '11, 4pm

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Eat up, Atlanta! | Modern Luxury

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enn.com 02 Jul '11, 9am

Printer Friendly Version Email to a Friend Close From: Deborah Zabarenko, Reuters, Environment Correspondent WASHINGTON Pu...

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Court Upholds Endangered Species Act Protection...

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