Subject matter experts the world over, based on scientifically flawless, peer reviewed data collection and analysis, have reached the consensus that Al and Tipper Gore's divorce is the direct result of man-made marital cooling.
Of course there was a tiny minority of experts that question this consensus and believe it's more likely that their divorce was caused by extra-marital warming, but the evidence for that has been largely supressed and these experts have been shunned by the expert community.