Polar vortex: Fire used to melt ice on Chicago train tracks

Flames from gas-fed heaters stop snow and ice from clogging up the track at railway intersections.

from BBC News - World https://bbc.in/2RsdKSK

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Iran attacks damage 20 US military sites since start of war, satellite images show

Analysts told BBC Verify that Tehran's strikes were more extensive than publicly acknowledged. from BBC News https://ift.tt/aCBhRQp