Um, where have you been?
You can't turn on a television or pick up the Times without hearing about it. "An Inconvenient Truth" has been shown in classrooms as fact for years. One of my nephews had a Christmas play about "global warming". This whole web site, and thousands of others are almost exclusively devoted to it. I know people who think they know their "carbon footprint", but can't tell me how much they pay in taxes.
I really can't imagine how we could have more "education" on the topic than we have now.