Dr. Christopher Keating, a physicist, seems not to understand science especially well: he's offering $10,000 to anyone who can disprove that mann-made global warming is occurring. There are a few problems with that; namely that science is done by forming an hypothesis and then testing it to see whether or not they hypothesis conforms to observed reality - not the other way around, which is what Keating's after.
Another is that not one of the carefully-crafted computer models purporting to demonstrate the reality of mann-made global warming has proven accurate, in fact, many of the models are similar to those used to project the occurrence of mann-made global winter back in the 1970s.
And yet another is the observable fact that the earth has been cooling for nearly two decades - although disciples of the Religion have been forced to admit to a "pause" in the relentless onslaught of mann-made global warming, they have been unable to account for it, and their vaunted computer models failed to project the current "pause".
Taken together, these irrefutable facts do not "disprove" the basic tenets of the Religion, however the basic tenets of the Religion don't seem to have been "proven", either.
Keating is essentially asking "deniers" to prove how many angels can dance on the head of a pin.
And that's not how science is done. After all, science is not in the business of disproving; its job is to prove. Science has yet to prove (or disprove) the most fundamental of questions: does God exist? What created our universe?
Oh, yes: the "Big Bang" theory. But note that even scientists themselves refer to it as a theory, rather than as a proven fact. The only fact in that regard is this: nobody knows.