You don't have to agree or disagree with it, but gives you a well-focused subject area to think about.
Ponder this point:
If you transfer the hydrocarbons buried in the ground (in the form of crude oil) on to the surface and into the atmosphere (that is where all the diesel and petrol we burn end up), what will be the consequence of this? I don't have the answer but logic tells me that there must be some downside as a consequence.
Some individuals take that extra (or brave) step to articulate their answers and that is what Al Gore does in this video. It may not be 100% correct; it may not be 100% incorrect either. So, in between lies some truth [no pun intended].