Sundance film festival: A cautionary new film, executive-produced by Leonardo DiCaprio, warns of the devastating consequences if the Utah lake continues to disappear Sundance film festival: A cautionary new film, executive-produced by Leonardo DiCaprio, warns of the devastating consequences if the Utah lake continues to disappear T he Sundance film festival kicked off its final edition on Thursday in Park City, the Utah ski enclave that has housed the independent film hub for more than four