From the Times (UK):

Mr Gore admitted that it was difficult to persuade the public that the threat from climate change was as urgent as the threat from Nazi Germany.

Indeed, what a challenge. That’d be like convincing the public that Obama is fiscally responsible, Britney Spears is a virgin, the Founders envisioned socialized medicine, 2+2=5, $100 million dwarfs $8 billion, state lottery revenue is for education