Chances are, if you've ever left your elk or deer meat in the deep freezer for too long, a fine layer of ice crystals forms around the vacuum bag. The process—known as sublimation—doesn't just occur in your freezer; you can also find examples of sublimation in nature, which is where you can find this month's edition of Wildlife Express.
When looking across a field of snow, it may seem like a quiet, deserted space. But the subnivean zone—the area beneath the snow—is a microhabitat beaming with life. Some of the most important creatures living in the subnivean zone you can’t even see. They are billions of tiny organisms. These microorganisms drive the health of the whole ecosystem.