Boston January 18, 2018 6:49 pm BU Study Links Repetitive Hits to Head to CTE Researchers at Boston University argue that the hits suffered in football, not concussions, are what lead to CTE. US & World Videos 4:03 Understanding Day 1 of the Karen Read murder trial | Analysis 1:49 Out-of-control truck smashes sign outside Mass. ice cream shop 6:26 Father and son with contracting side hustles faced similar financial allegations 23:59 Teen (Girl) Talk with Chelsey Goodan 39:37 Defense's opening statement in the Karen Read trial | FULL VIDEO