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Search results for Polar Bear

Ecology 9 hours ago

Receding ice leaves Canada's polar bears at rising risk

Sprawled on rocky ground far from sea ice, a lone Canadian polar bear sits under a dazzling sun, his white fur utterly useless as camouflage.

Plants & Animals Sep 14, 2022

Using eyes in the sky to locate seals in a rapidly changing Arctic

This summer, researchers managed to collect stunning drone images of both ringed seals and walruses. In one fjord, the St. Jonsfjorden, twelve ringed seals were found spread out throughout the fjord, resting on the fast ice. ...

Environment Sep 08, 2022

How a human rights approach to climate change can spark real change

On Dec. 7, 2005, Canadian-born mother and grandmother Sheila Watt-Cloutier filed a 163-page petition with the Inter-American Commission on Human Rights arguing that the impacts of climate change violated the "fundamental ...

Earth Sciences Aug 31, 2022

Determining why the Arctic is turning ever greener

A research team from ETH Zurich and WSL traveled to Spitsbergen this summer to take a closer look at the phenomenon of Arctic greening. Project manager Sebastian Dötterl discusses research in the face of polar bears, strikes ...

Plants & Animals Aug 24, 2022

Team provides novel baseline data on leopard seals, mysterious apex predators of Antarctica

Baylor University marine biologist Sarah Kienle, Ph.D., has always been fascinated by leopard seals. These prehistoric, reptilian-looking seals are often portrayed as scary villains in movies such as "Happy Feet" and "Eight ...

Earth Sciences Aug 18, 2022

Arctic mercury levels drop during the depths of the winter

The interplay between mercury and manganese in Arctic seawater may explain a surprising drop researchers found in mercury levels in the Barents Sea during the winter.

Plants & Animals Aug 16, 2022

Blue crabs found to attack at low tide

Dr. David Johnson, an ecologist at William & Mary's Virginia Institute of Marine Science, has spent more than 20 years in salt marshes, at sites all along the U.S. East and Gulf coasts. But while doing research in a Virginia ...

Biochemistry Aug 09, 2022

An upgrade for magnetic resonance methods with a 1,000-fold amplifier

Researchers determine the structure and dynamics of proteins using NMR (Nuclear Magnetic Resonance) spectroscopy. Until now, however, much higher concentrations were necessary for in-vitro measurements of the biomolecules ...

Plants & Animals Jul 29, 2022

During low-ice seasons, some polar bears are turning to glacier ice

,Holes in sea ice provide the perfect hunting ground for polar bears looking to catch their main food source—seals. So when rising temperatures cause sea ice to melt, polar bears' existence is threatened, making them the ...

Plants & Animals Jul 25, 2022

What's a shark ordinarily associated with the Arctic doing in Belize?

A half-blind shark that is typically thought to live in freezing Arctic waters, scavenge on polar bear carcasses and survive for hundreds of years, recently turned up in perhaps an unexpected place—a coral reef off Belize. ...

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