I'm calling BS on this!! He hasn't been interested in this subject for more than 15 years; since just before he got shut down for President! Before that, I'm sure you'd be hard pressed to find ANYTHING from Algore about Global Warming. He may have talked about the environment, because he would have been sucking up to the Greenies.
Before global warming, Gore hung around with the global cooling moonbats. Gore has been involved at some level with the “age of aquarius” new world order crowd since the late 60’s.