Zoom in on this supposed image of sheep on a hillside and you'll be in for quite the surprise.

Many residents of Ulan Bator, Mongolia, use coal-burning stoves during the winter months when staying warm is a matter of survival. But the pollution is hazardous to their health.

Waves of up to about 3 feet reached parts of Alaska by Saturday morning. But hours before those waves arrived, sounds from the blast reached the homes of many Alaskans - all the way from Juneau to the Aleutians.