Mountainous areas are also very cold. Cold environments are found at higher latitudes and higher altitudes. They include polar, tundra and mountain, or alpine, biomes. Cold environments face ...

And in many places, the chill will be dangerous. Alerts for cold weather are in effect for nearly half the country’s population, running from the northern Plains to the Gulf Coast and from the ...

National Weather Service meteorologists warned of temperatures cold enough to be fatal descending across most of the nation.