When glaciologist Jack Kohler returned to Austre Brøggerbreen in Svalbard, he was shocked. More than three meters of the ice at the glacier front had melted away. That's a record. And an ice tunnel had become a trench.
In 1984, there were more than 400,000 Antarctic petrel in the bird cliff. By 2020, the population was shrinking to less than 100,000. This year, there were none.
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