What’s at stake on Tuesday? The planet.

“Everybody complains about the weather, but no one does anything about it,” Mark Twain used to quip, back when humans had only just begun digging fossil fuel out of the ground and burning it for energy.

​ “Everybody complains about the weather, but no one does anything about it,” Mark Twain used to quip, back when humans had only just begun digging fossil fuel out of the ground and burning it for energy. Read More Breaking News, Latest News and Videos | CNN