The first concussion came playing football in high school, the second playing the game at Annapolis, and a third playing rugby. It meant the end of contact sports for U.S. Navy Captain and doctor James L. Hancock, but not the end of his risk for traumatic brain injury.
A rose by any other name would smell as sweet; the saying is perhaps a testament to the acute sense of smell that is unique to mammals. Paleontologists have now discovered that an improved sense of smell jump-started brain evolution in the ancestral cousins of present-day mammals. The research appears in the 20 May issue of the journal Science.