Madagascar separated from the African mainland long ago, leaving its animals to evolve alone.

The longer version

Isolation changes how species evolve. When a landmass breaks away, the plants and animals stranded on it face different conditions and different competitors. Over long spans they adapt into forms found nowhere else, a pattern biologists call endemism. Small populations also drift quickly, because chance plays a larger role when few individuals are breeding.

Madagascar split from a larger landmass long ago, and the wide channel around it discouraged later arrivals. Lemurs, unusual reptiles and many flowering plants fill roles that other creatures occupy on the mainland. Loss of habitat threatens many of these species today, since small populations on limited ranges recover slowly from any disturbance.

Where this entry sits

These facts wander across maps, borders, deserts, rivers, mountains, and the extreme corners of the natural world. Each one is short and self-contained, offering a small surprise about places you may never visit rather than anything you actually need. The full list sits on the Geography page, where every entry is listed in order.