December 4, 2019 11:23 pm Study Shows Possible Link Between Hair Dyes and Cancer Researchers say there could be a link between permanent hair dyes, chemical straighteners and an increased risk of breast cancer. US & World Videos 3:05 100 protesters detained at Northeastern University 2:39 Community mourns police sergeant killed on duty 4:32 Anti-war protester at Northeastern speaks amid arrests: ‘We are peaceful students' 5:39 Billerica police sergeant hit and killed by excavator during construction detail 2:30 Arrests made in string of home break-ins targeting Asian-Americans