Betsy (and Bob Marley!) introduce an engaging interview between NRDC George Black and Step It Up 07 torchbearer Bill McKibben. The national rally on April 14th is such a crucial opportunity to channel all of our creative and optimistic instincts towards decisive action to protect the only world that humans have thrived in: "(20 years ago) We could have started with the easy, tepid compromise. Now scientifically, our backs are against the wall." Get involved! LISTEN (7 min)