RAPID CITY, South Dakota, April 9 -- The South Dakota School of Mines and Technology issued the following news release: * * * Mines Professor Receives NSF CAREER Grant to Help Unravel Mysteries Surrounding Cosmic Rays For more than a century, scientists have known the existence of cosmic rays, fast-moving particles showering the Earth from galaxies above. These high-energy charged particles have long fascinated scientists who believe cosmic rays hold answers to understanding our universe. Y  more