Chemical leak sickens dozens at Las Vegas poolBy the CNN Wire Staff August 27, 2010 7:01 p.m. EDT (CNN) -- A chemical leak in the pool area of the MGM Grand Hotel in Las Vegas, Nevada, sickened as many as 100 people Friday, sending 12 of them to local hospitals, according to a spokeswoman for Clark County. It was not immediately clear what kind of chemical was responsible for the fumes, which caused some of the hotel's guests to have difficulty breathing, said Clark County spokeswoman Stacey Welling. About 200 people were evacuated from the area, Welling said. Video of...