He knew Greenland's melting ice better than anyone. Then he disappeared into it.
13
votes
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A mysterious rose survived weeks under water after Hurricane Katrina. Its origins are still unknown but fans are planting it across the US.
24 votes -
Unique 1.5m year-old ice to be melted to unlock mystery
16 votes -
Coastal Peregrine falcons’ mysterious decline
13 votes -
The absurd mystery of flamingo no. 492
4 votes