Revkin: "I consider myself a climate activist"

Twitter / drgrist: @Revkin @RogerPielkeJr Is there ...

[drgrist] @Revkin @RogerPielkeJr Is there some danger in climate activists being too hopeful? Too full of optimism? Some danger I don't see?

[Revkin] @drgrist @RogerPielkeJr I'm totally hopeful actually, and I consider myself a climate activist.