vehicle collisions and parachute landings has improved with improved helmet design and materials," the report's authors write. "However, the level of protection from nonfatal brain tissue injuries ...

However, all motorcycle authorities agree that a full-face motorcycle helmet is considerably safer than an open-face or half-helmet ... ensure that your chosen brain bucket is a good physical ...

We still have four or five basic types, including the full face, open face or three-quarter, half ... allows the helmet to be removed safely and in less time than a normal brain bucket.

That's what University of Windsor master's graduate Daniella Mlinarevic discovered during Project: Brain Bucket. Mlinarevic took bike helmets into high school classrooms and surveyed students ...