Firefighters battle extreme heat in Revere; MIT, Harvard have mask that can detect COVID-19; another hot day tomorrow, thunderstorms expected.
Firefighters battle extreme heat in Revere; MIT, Harvard have mask that can detect COVID-19; another hot day tomorrow, thunderstorms expected.
Jason DeRusha shares all the trending headlines from the web, and viral stories from social networks (12:44). CBSN Minnesota..