SPORTS EVOLUTION
'(<a href="http://www.j-archive.com/media/2006-04-21_J_04.jpg" target="_blank">Cheryl of the Clue Crew slides a curling stone across the ice in the Utah Olympic Oval.</a>)  Curling came to North America with Scottish soldiers who melted down these iron projectiles; today's stone is 40 pounds of polished granite'
cannonballs