Ansley A. Charbonneau, Dan J. Smith, An inventory of rock glaciers in the central British Columbia Coast Mountains, Canada, from high resolution Google Earth imagery, Arctic, Antarctic, and Alpine ...

Even in winter, the trees are full of songbirds. Brian Mann/NPR HIGH ATLAS MOUNTAINS, Morocco — When we set off on foot from a tiny mountain town called Imlil, it was still early, the sky purple.