Power generators have boosted output from high-polluting coal and oil-fired power stations this year to help battle an extended cold snap enveloping much of the country.

Snap Inc (SNAP) stock saw a decline, ending the day at $10.56 which represents a decrease of $-0.30 or -2.76% from the prior close of $10.86. The stock opened at $10.92 and touched a low of $10.54 ...