MINNEAPOLIS - Schools that run bake sales and let teachers reward students with candy risk having more overweight pupils, a study in Minneapolis suggests. That offers some vindication to the schools across the country that have cracked down on cupcakes and cookies on campus. Lead author Martha Kubik, an associate professor at the University of Minnesota, acknowledged her research doesn't prove that such food practices contribute to adolescent obesity, but there does seem to be a connection. "I think we all have to step back and look at what we're doing to contribute to practices that might not support children...