A snowmobile pulls a home-made sledge along the frozen Yenisei river, with the air temperature at minus...
A snowmobile pulls a home-made sledge along the frozen Yenisei river, with the air temperature at minus 25 degrees Celsius (minus 13 degrees Fahrenheit), outside Krasnoyarsk, Siberia, Russia, January 28, 2017. REUTERS/Ilya Naymushin