Aerial drone footage shows a massive crack in Antarctic ice, forcing scientists to leave their research base.
A chunk of ice the size of the US state of Delaware has broken off the Larsen C ice shelf, one of Antarctica's largest ice shelves. Scientists fear global warming is destabilizing Antarctic ice shelves.
The Earth’s southernmost continent is almost entirely covered by ice almost 2 km thick. This week, one of the largest icebergs on record split from Antarctica. But experts say it could just be part of a natural cycle.
Greenland, home to the world's largest permanent ice sheet outside Antarctica, is being swept by wildfires. Scientists say global warming and increased plant cover are likely factors.
Where a trillion-ton iceberg calved last week, researchers have detected a new rift. The concern is that the Larsen C ice shelf will destabilize and collapse, releasing glacial ice into the sea.
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