ScienceDaily: The American pika is thought by many biologists to be a prime candidate for extirpation as the planet continues to warm, done in by temperatures too severe for this small mammal native to cold climates. But a new study, published this week in the journal Global Change Biology, paints a different, more complex future for this rock-dwelling little lagomorph -- the same order that includes rabbits and hares. Pikas may survive, even thrive, in some areas, the researchers say, while facing extirpation...