antarctica
Italian mountaineer Reinhold Messner is perhaps one of the world's last great adventurers: he has conquered the planet's highest peaks.
Mass starvation has wiped out thousands of penguin chicks in Antarctica, forcing their parents to forage further for food in a "catastrophic breeding failure".
One of the biggest icebergs on record has broken away from Antarctica, scientists said on Wednesday.
A trillion-tonne iceberg, one of the largest ever recorded, has snapped off the West Antarctic ice shelf.
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