You're on a date with someone really cute. You are dining by candlelight. A violinist plays a slow, romantic melody. The wine trickles like a mountain brook. It seems as if the stars are aligning. Suddenly, you begin to talk of how you arrived at the restaurant. "I walked," you say. "I wanted to reduce my carbon emissions."

"Emissions," says your date. "For what? Global warming?"

"Yeah," you say, confused.

"That's all fake. A bunch of tree huggerspaid some scientists money to say climate change is real. It's all fake. Do you think the world is going to turn out like that movie, Waterworld? That movie was bad. It's all fake."

Before you go as frigid as the South Pole used to be, there might be a chance you can talk your date down from his or her crazy soapbox. Here are some suggestions.