It seems the results obtained from climate science are indeed reliable. It is amazing that scientists are held in so low regard nowadays that British MPs feel they need to jump in and “investigate” a bunch of leaked internal emails from the University of East Anglia. Yes, the peer-review process has problems, any scientist can probably tell you that. Yet it is so much better than the alternative: a flood of bad articles and uninformed opinions swamping reports of actual scientific progress.
For anyone that quickly wants to know more about why global warming is highly probable I recommend you read The Economist‘s nice summary.