Last week’s polar vortex “set a new single-day record for na aspwv1970-01-01T00:00:00-05:00January 1st, 1970|Twitter| Last week’s polar vortex “set a new single-day record for natural gas demand,” @TribLIVE reports. https://t.co/8fD8ApBztf Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail