What is the single most important economic number that can make or break the climate change solution?

According to Vinod Khosla, it is the Chindia price.

SPENCER MICHELS: What do you call it, the Chindia price? China-India?

VINOD KHOSLA: Yes. I say most effective climate change technologies have to be on trajectory, they don’t have to day one be cheap enough, but they have to be on trajectory to meet the Chindia price, the price at which India and China would adapt these technologies for economic reasons. Because without India and China adapting these technologies, there is no cost effect, there’s no real climate change solution.

An extensive interview at PBS. Check it out.