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 2:31 Fallen Billerica Police Sgt. Ian Taylor honored at vigil 2:39 MIT president calls for shutdown of student encampments 0:16 4 people seriously hurt after boat sinks off Cape Cod 2:35 Fallen Billerica police sergeant honored during vigil 2:09 President of MIT calls for shutting down pro-Palestinian encampments