The only reason that global warming is so alarming is because the scientific community has absolutely no idea what is causing it
Yes they do.
if it is indeed happening
Yes it is
You may not agree with the positions that this blog poster makes, but he makes some pretty critical points about climate change: http://realclimatescience.com/... . You cannot change the data to suit your needs; that's not science.
There is very little data in that post. There is a graph, which he claims is erroneous, with a link to the data. Then a graph that he claims is the true state of affairs, with... wait for it... no link to any data.
Scientists are just like everyone else: they're people with a job. Some of them are good at it but, frankly, most of them are decent-at-best at it -- just like every other job.
And when the top people in your particular field, having studied the information at hand, arrive at the same conclusion, do you immediately accuse them of collusion in a global plot to deceive everyone?