polar vortex January 31, 2019 10:11 am Matt Noyes Explains the Polar Vortex Polar Vortexes have been studied by meteorologists since the middle 1800s, but why has it been a hot topic recently? And what exactly is it, anyway? Meteorologist Matt Noyes explains. US & World Videos 2:50 Rally held in Boston in support of Jewish college students 0:16 4 people seriously hurt after boat sinks off Cape Cod 24:50 @Issue: Biden signs the foreign aid bill, and a retrospective of Boston's 2024 Olympics bid 3:05 100 protesters detained at Northeastern University 2:39 Community mourns police sergeant killed on duty
