climate change July 23, 2020 6:10 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. Local 1:59 Chicago mayor speaks after suspect charged in murder of Officer Luis Huesca 3:02 Kim Foxx details charges against Xavier Tate in the murder of Officer Luis Huesca 9:34 Chicago police release new details in arrest of Xavier Tate 1:12 5 things to know about Tom Thibodeau 2:23 Suspect accused of killing CPD officer Luis Huesca