A person walks in frigid temperatures near Constitution Avenue, Tuesday, Jan. 7, 2014, in Washington. The National Weather Service said the mercury bottomed out at 3 degrees before sunrise at Baltimore-Washington Thurgood Marshall International Airport, with a wind chill of minus 16. (AP Photo/Luis M. Alvarez)

Is ‘Polar Vortex’ Attributable to Climate Change? Yes.

As temperatures plummet, a reminder: ‘Every weather event in the modern world is attributable to climate change.’