Polar Regions

An international team of researchers have sounded new alarm bells about the changing chemistry of the western region of the Arctic Ocean after discovering acidity levels increasing three to four times faster than ocean waters elsewhere.

Rising sea levels from melting glaciers and ice sheets pose an increasing threat to coastal communities worldwide. A new analysis of high-resolution satellite observations takes a major step forward in assessing this risk by confirming theoretical predictions and computational models of sea-level changes used to forecast climate-change-driven impacts.

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.

Researchers at the University of Toronto have identified the mechanism responsible for the formation of temperature and salinity "staircases" in the Arctic Ocean, resolving a mystery that has confounded oceanographers and climatologists alike for more than half a century.

The larval health of an Antarctic cold-water coral species may be resistant to warming water temperatures, a University of Maine study finds, bringing new hope for the climate change resilience of deep-sea ecosystems in the Western Antarctic Peninsula.