MIT October 7, 2022 6:38 am MIT and Delta Team Up to Eliminate Contrails Researchers have found that contrails trap heat from the earth surface in the atmosphere. US & World Videos 4:05 Forecast: Late season warmth through next week 0:25 Car crashes into Quincy liquor store 2:28 Hundreds more Boston hotel workers striking for new contract 0:30 More Boston hotel union workers go on strike 1:49 Calls for help grow after Revere teacher hurt during fight