If the NCAA tournament selection committee focused on the most recent games, it might make seeding more accurate, researchers found.
Researchers took a detailed look at 17 years of training records for Norway's Marit Bjørgen.
The goals of a major push for football helmet safety should bring improvements, but the overall results remain unpredictable.
The vast majority of traumatic brain injuries are concussions. Researchers talk about the problem of these head injuries in sports.
Anything that has mass and moves can give off gravitational waves, but for familiar items they are extremely tiny.