Thursday's health and safety news from the world of football:
- The Detroit News featured new Detroit Lions coach Jim Caldwell, who spoke to 300 area teens with other area sports stars as part of a program presented by the United Auto Workers. He was joined by former Detroit mayor and Pistons player Dave Bing, former Michigan State basketball star Mateen Cleaves, former NBA player Derrick Coleman and former Lions lineman Lomas Brown.
- Former Stanford player and NFL prospect Anthony Wilkerson wrote for the school's Peninsula Press why some players he knows continue to play after recovering from concussions.
- The Oklahoma House voted down a bill that included a tier of suspensions for coaches, athletic trainers or referees/game officials who ignore an athlete's concussion symptoms or allow an athlete to return to play, according to the Tulsa World.
- The NCAA reduced the penalty for a positive marijuana test from a full season to half a season in college football, CBS Sports reported.
- WRCB-TV in Chattanooga, Tenn., reported some Tennessee coaches have been slow to adapt to the state's new concussion law requiring a signed concussion form from a parent before the athlete can compete.
-- Bill Bradley, contributing editor