If you think you understand the polar vortex, think again.

Learn more about the science behind the record-breaking cold spell it created: https://to.pbs.org/2WBZvyw

Hosted By:
Caitlin Saks

Digital Producer:
Emily Zendt

Production Assistance:
Sukee Bennett
Allison Eck
Taylor White
Natalie DiDomenico
Lorena Lyon
Rishya Narayanan
Ana Aceves

Additional Footage:
NASA
NOAA
ClimateReanalyzer.org
WKAR
Zachary Lawrence
Mat Rotman
Greg Kestin

Music: APM

© WGBH Educational Foundation 2018