MTPR

beetles

A beaver swims through a forest pond.
Josh Burnham (CC-BY-2.0)

In the great stands of old cottonwood trees along prairie rivers, chemical skirmishes are taking place between beavers, cottonwoods, and a certain species of beetle. Beavers gnaw on the trees; the trees fight back with toxic compounds; and the beetles move in to feast on the toxins. But in this apparent conflict, all three species benefit.

Flickr user, Jason

"An Insect's Guide To Surviving the Winter," written by Ashley King, read by Caroline Kurtz.

With the help of fur, hair, or clothing, warm-blooded mammals keep a consistent internal temperature, no matter the air temperature. That's not true for insects. How do they survive the cold of winter?