Evolution at work: Even yeast mothers sacrifice all for their babies
A mother's willingness to sacrifice her own health and safety for the sake of her children is a common narrative across cultures – and by no means unique to humans alone. Female polar bears starve, dolphin ...
Saber-toothed cats and bear dogs: How they made cohabitation work
(Phys.org)—The fossilized fangs of saber-toothed cats hold clues to how the extinct mammals shared space and food with other large predators 9 million years ago.
Polar bear evolution tracked climate change, new DNA study suggests
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.
New study suggests polar bears evolved earlier than previously thought
Wild brown bear observed using a tool
Scientists uncover surprising features of bear hibernation
Black bears show surprisingly large and previously unobserved decreases in their metabolism during and after hibernation according to a paper by scientists at the Institute of Arctic Biology at the University ...
Water Bears to Travel to Martian Moon, Test Theory of Transpermia
Video from polar bear's neck cam shows life on ice
The first video of life on Arctic sea ice from a polar bear point of view has been released by the U.S. Geological Survey.
Polar bear genome reveals rapid adaptation to fatty diet
A comparison of the genomes of polar bears and brown bears reveals that the polar bear is a much younger species than previously believed, having diverged from brown bears less than 500,000 years ago.
Iron-bearing minerals in sediments naturally reduce contaminant levels
(Phys.org) —The release of wastes associated with nuclear reprocessing from storage facilities into the underlying sediments and groundwater is an important environmental concern. Scientists working with ...
Study proves that wildlife crossing structures promote 'gene flow' in Banff bears
(Phys.org) —A first-of-its-kind study of Banff National Park bears by scientists with the Western Transportation Institute at Montana State University has shown that a system of wildlife crossing structures ...
How do polar bears stay warm? Research finds an answer in their genes
(Phys.org) —In the winter, brown and black bears go into hibernation to conserve energy and keep warm.
Fur and feathers keep animals warm by scattering light
In work that has major implications for improving the performance of building insulation, scientists at the University of Namur in Belgium and the University of Hassan I in Morocco have calculated that hairs ...
DNA links mysterious Yeti to ancient polar bear (Update 3)
A British scientist says he may have solved the mystery of the Abominable Snowman—the elusive ape-like creature of the Himalayas. He thinks it's a bear.