The current issue of Rolling Stone magazine details the plight of BMX rider Dave Mirra. Mirra took his own life at age 41. After Mirra’s sudden, seemingly inexplicable death, neuropathologists examined Mirra’s brain. The scientists discovered his brain was riddled with chronic traumatic encephalopathy, or CTE.CTE is the same neurodegenerative disease that has been found in the brains of 90 out of 94 NFL players’ brains examined by the Boston University Center for the Study of Traumatic Brain …