At least 10 people were killed Sunday when a half dozen tractor-trailers and five cars created a pileup in Florida after smoke and fog put highway visibility at zero, according to the Associated Press. http://www.usatoday.com/news/nation/story/2012-01-29/deadly-crashes-florida/52869582/1?csp=34news The collisions took place on Interstate 75 south of Gainesville,…