An analysis of ancient DNA from a 100,000-year-old polar bear has revealed that extensive hybridization between polar bears and brown bears occurred during the last warm interglacial period in the Pleistocene, leaving a surprising ...
Plants & Animals
Jun 16, 2022
2
1072
Today, the rocks of the Hanna Formation in south-central Wyoming are hundreds of miles away from the nearest ocean. But around 58 million years ago, Wyoming was oceanfront property, with large hippo-like mammals traipsing ...
Paleontology & Fossils
May 13, 2021
0
238
Scientists from the University of Massachusetts Amherst, Vanderbilt University and Clark University have shed new light on the genomic foundation of the polar bear's ecological adaption by pinpointing rapid changes in the ...
Plants & Animals
Jun 17, 2019
0
107
(Phys.org)—A pair of researches are challenging claims made by a British scientist last year that DNA samples of animal remains found in the Himalayas were from a brown/extinct polar bear hybrid that is still alive and ...
A whole-genome analysis suggests that polar bear numbers waxed and waned with climate change, and that the animals may have interbred with brown bears since becoming a distinct species millions of years ago.
Evolution
Jul 23, 2012
8
0
(Phys.org) -- A new genetic analysis carried out by and international team of scientists has revealed that polar bears and brown bears may have diverged around 600,000 years ago, which is much earlier than the previous estimate ...
(PhysOrg.com) -- Because brown bears are so reclusive, not to mention dangerous to be around, not a lot is really known about their brain power. This is actually rather odd because bears have the largest brains for their ...
Brown bears foraging for food in the Shiretoko Peninsula of Hokkaido, Japan, have been disrupting tree growth in artificial conifer forests, according to a new study published in Ecology. Researchers compared soil and tree ...
Plants & Animals
Mar 1, 2024
1
155
The brown bear is one of the largest living terrestrial carnivores, and is widely distributed across the Northern Hemisphere. Unlike many other large carnivores that went extinct at the end of the last Ice Age (cave bear, ...
Plants & Animals
Jan 24, 2024
0
15
Nottingham Trent University research revealed how carnivores became significantly more active and engaged more with their enclosures when given additional enrichment such as different types of feeding, new structures, the ...
Plants & Animals
Dec 12, 2023
0
120
