Polar bear genomes have retained mitochondrial DNA from ancient grizzly bears, and grizzlies have inherited genes from hybridizing with polar bears. “People worry that if they interbreed, polar bears ...

Today, polar bears live only on the northernmost stretches of ice and snow, but their roots may lie farther south -- in an area that is now Ireland. Sometime within the last 50,000 years, suggests a ...

The cave bear, Ursus spelaeus, was a prominent member of the Pleistocene megafauna in Europe, whose evolutionary history and ecological dynamics continue to captivate palaeontologists and evolutionary ...

Polar bears are running out of ice and out of time, yet inside their cells something remarkable is happening. As the Arctic warms and traditional hunting grounds vanish, researchers are finding that ...

Ursus deningeri, an early cave bear, had a larger third molar (right) compared to the second molar (center) than would be expected based on the model. (Natural History Museum Vienna). Mammalian teeth ...

A team of scientists from EPFL and Alaska Pacific University has developed an AI program that can recognize individual bears in the wild, despite the substantial changes that occur in their appearance ...

The plan was simple. Make a quick stop at a geologic feature that would provide a real-world example of topics that were being discussed in my biology classes. The topic was evolution and I was ...

Meet our story’s protagonist: a female polar bear. Displaced by shrinking sea ice in the Arctic, she was forced to wander south, deeper into the Canadian Northwest Territories. Here, our lady in white ...

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