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 0:59 Jury seated in Karen Read murder trial, hearing for outstanding motions Thursday 1:33 Ice Cube talks basketball: The Big 3 league, how far the Celtics can go, and more 2:31 Mike Gorman retires as voice of the Celtics 1:27 Ex-Holyoke city councilor facing child sex abuse charges appears to join Russian military 1:21 Dana-Farber Cancer Institute retracts 7 studies