Marilyn Perkins
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40-year-old 'queen of icebergs' A23a is no longer world's biggest after losing several 'very large chunks' since MayA giant iceberg called A23a that broke off Antarctica in 1986 is now disintegrating near South Georgia Island in the South Atlantic Ocean, scientists say.
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Abrupt changes taking place in Antarctica 'will affect the world for generations to come'From sea ice to ocean currents, Antarctica is now undergoing abrupt changes — and they are likely to significantly intensify in the future.
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Scientists discover long-lost giant rivers that flowed across Antarctica up to 80 million years agoLarge flat surfaces carved by ancient rivers deep beneath East Antarctica are influencing how ice flows across the continent today, according to a new study.
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Antarctic sea ice collapse linked to a mysterious spike in ocean saltSatellite imagery has revealed a yet-to-be-explained rise in the Southern Ocean's salinity. It could be a key factor in the decline of the region's sea ice.
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World's largest iceberg, A23a, is disintegrating into thousands of pieces alongside penguin refugeEarth from space A new satellite photo has revealed that the "megaberg," A23a, is beginning to break apart, spawning thousands of smaller ice chunks around the Antarctic island of South Georgia.
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NASA satellites show Antarctica has gained ice despite rising global temperatures. How is that possible?An abrupt change in Antarctica has caused the continent to gain ice. But this increase, documented in NASA satellite data, is a temporary anomaly rather than an indication that global warming has reversed, scientists say.
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What's hiding under Antarctica's ice?Antarctica is the fifth-largest continent by size, so what's hiding under its massive sheaths of ice?
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Wilkes Land crater: The giant hole in East Antarctica's gravitational field likely caused by a meteoriteResearchers have proposed many origins for a gravity anomaly in Wilkes Land, East Antarctica, but the latest evidence suggests the subglacial hole is an impact crater measuring 315 miles across.
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Scientists create new map showing ice-free Antarctica in more detail than ever beforeBedmap3 is the most fine-grain map to date of the landscape beneath Antarctica's ice. Scientists created it using more than 60 years' worth of data from satellites, ships and dog-drawn sleds.
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