For 7 hours, Democratic presidential candidates talked climate crisis — and it was great

The greatest threat to life on earth finally got the attention it deserved on Wednesday as CNN devoted seven whole hours to interviewing presidential candidates for its Climate Crisis Town Hall. It started with Julián Castro, the former mayor of San Antonio, at 5 p.m. Eastern time and ended with Senator Cory Booker from New Jersey, who walked onto the set after 11 p.m. In all, 10 candidates fielded queries from CNN hosts, a studio audience, and questioners on video.