“It didn’t look good for the dusky gopher frog. By the early 2000s, scientists knew of fewer than 100 adults left at a single seasonal pond in southern Mississippi, and that population faced an imminent threat: The water kept drying up before the tadpoles turned into frogs, killing them. Then, to make things worse, a parasite hit. A few survivors were taken into captivity. They refused to mate.

But two decades later, the frog’s trajectory has turned around. While the species remains critically endangered and still relies on intensive interventions, its numbers have grown to around 600 adults, spread out over some 15 ponds and a handful of captive populations that now produce offspring.”

From New York Times.