Picture sea ice in your mind. You probably imagine brilliant white, snow-covered floes floating on the surface of the ocean, home to penguins in the south of the globe or polar bears in the north. But ...

When polar ice sheets melt, the effects ripple across the world. The melting ice raises average global sea level, alters ...

Adelie Penguin Standing Alone on Iceberg in Antarctica, Looking at the Far End, Icebergs Floating Behind, in South Pole© Cinless/Shutterstock.com Tragedy is unfolding on what remains of Antarctica's ...

Antarctic sea ice is more than just a platform for penguins. The sea ice's high reflectivity influences the whole Earth's climate, and the ice is a key habitat for underwater as well as above-water ...

Extreme lows in sea ice induce many changes in the physical, ecological, and societal systems of Antarctica and the Southern Ocean. A: an average sea ice summer. B: an extreme low sea ice summer. In B ...

Earlier in 2025, UNSW Sydney Ph.D. candidate Christina Schmidt submitted her thesis—from the deck of Australia's multi-billion-dollar icebreaker, just off the East Antarctic coast. Schmidt's research ...

A seal resting on an Antarctic ice floe may look safe, at least for a moment. It is out of the water, beyond the reach of most marine predators, perched on a slab of floating ice like a castaway on a ...

A new study suggests Antarctica’s ice sheet hit a climate tipping point about one million years ago, making it far more reactive to temperature and CO2 changes. Researchers warn this surprising ...