"This is by far the most serious challenge that we face or have ever faced"

Al Gore on global warming, speaking at the Chautauqua Institution in western New York.

"None of the other ones will matter if we don't get this right."

Absolutely. But do we have the will, the collective will, to get it right, to do what we must, to stand up to the challenge and overcome this potentially cataclysmic threat to our planet?