WATCH: Fire breaks out at U.N. climate event in Brazil

A fire broke out at the venue hosting U.N. climate talks in Brazil, prompting evacuations as firefighters rushed to control the flames.

​A fire broke out at the venue hosting U.N. climate talks in Brazil, prompting evacuations as firefighters rushed to control the flames.   A fire broke out at the venue hosting U.N. climate talks in Brazil, prompting evacuations as firefighters rushed to control the flames.