Before "An Inconvenient Truth" and its also must-see opposition "The Great Global Warming Swindle", there was global dimming, an relatively unknown phenomenon that will change the perspective on the causes of climate change.
There are dozens of climate change theories based on models that, by definition, are created in search for a particular pattern, from a particular interest. This BBC documentary however feels very neutral, honest and realistic about a problem —the reduction of sun light reaching the Earth's surface— that is as fact as it is common sense, and whose solution (the reduction of pollution already taking place globally), paradoxcally contributes to global warming. Yes, global dimming cools down the Earth and counteracts global warming, hence the growing inestabilty of the climate caused by the two forces fighting each other
Horizon - Global dimming.
