In a cool new story from the ScienceNews webpage, Charlotte Lindqvist (University at Buffalo) and 13 colleagues have just published a paper in the Proceedings of the National Academy of Sciences that places the age of the oldest polar bear remains ever described at between 110,000 and 130,000 years. Using mitochondrial DNA extracted from a tooth of a bear jawbone found on Svalbard Island in 2004, the researchers were able to confirm that the jaw belonged to a polar bear. The work sheds light on the antiquity of the polar bear genome and the potential processes that originally restricted gene flow from their brown bear ancestors.
- RT @GreatLakesKaye: I just spoke with @NWSMarquette and they said the rainfall event that caused the #HoughtonFloods was unprecedented. The… 1 hour ago
- RT @JCSvenning: New open 2-yr postdoc position @BiochangeAU on "global tree diversity responses to climate change" in collab w/ @JMSerraDia… 1 hour ago
- @kirstyjean Penn State Proud! 1 hour ago
- RT @PatrickHamilto2: Replacing residential natural gas water heater with heat pump saved 80 therms over past year. Electric use went up 23… 1 hour ago
- RT @Alyssa_Milano: Hey, media! How about you do this? Stop saying things like: “Trump is spreading false information” and call it what it… 1 hour ago
- 240,781 hits