climate change July 23, 2020 7:10 am Extinction Event: How Climate Change May Spell Doom for the Polar Bear New study reveals the polar bear may become extinct by end of the 21st century because of climate change. US & World Videos 2:31 Fallen Billerica Police Sgt. Ian Taylor honored at vigil 2:33 Massive fire destroys Randolph apartment building 2:50 Rally held in Boston in support of Jewish college students 3:28 Forecast: Mostly cloudy, few showers tonight 2:39 MIT president calls for shutdown of student encampments
