Al Gore's latest talk and slideshow is brought to us by TED, an acronym for Technology, Entertainment, Design.
In it he argues for "a higher level of consciousness, a change in commitment, a new sense of urgency, a new appreciation for the privilege that we have of undertaking this challenge" of global warming.
We must not just "change the lightbulbs, but change the laws."
He asks the question: How dare we be optimistic? It's worth the 28 minutes to find out why Al Gore thinks the answer should be yes.
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