Tortoise evolution: How did they become so big?

The evolution of giant tortoises might not be linked to islands, as has previously been thought. In a first-of-its-kind study, researchers from Argentina and Germany have presented the most comprehensive family tree of extinct ...

How red crabs on Christmas Island speak for the tropics

Each year, the land-dwelling Christmas Island red crab takes an arduous and shockingly precise journey from its earthen burrow to the shores of the Indian Ocean where weeks of mating and egg laying await.

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