Polar vortex event’ brings subzero temps to U.S – and it could become more common (January 30, 2019)
January 30, 2019Extreme cold gripping Midwest does not debunk global warming, experts say (January 30, 2019)
January 30, 2019Herb Scribner for Deseret News explains how global warming can explain the polar vortex in the United States.
