Over 20 dead in U.S. polar vortex, frostbite amputations feared

Tens of millions of Americans braved Arctic-like temperatures on Thursday as low as minus 56 degrees Fahrenheit (minus 49 Celsius) that paralyzed the U.S. Midwest and were blamed for at least 21 deaths.

from Reuters: U.S. https://reut.rs/2Gitkid