Could a 10-year-old dream up the next Über? Find out at the Pasadena Children’s Business Fair & Marketplace, showcasing kids’ entrepreneurial genius. On Saturday, Nov. 16 from 10 a.m. – 2 p.m., the Pasadena Children’s Business Fair & Marketplace will host more than 30 young entrepreneurs at 339 S. Santa Anita Ave., Pasadena (hall of…