Rising food prices is caused by the price of oil... different subject.
They still have not proven AGW....simple as that. Until they do, it's a theory....only that.
LOL, you need to learn something about science before commenting. There is NO SUCH THING as being "only a theory". Theories are well-reasoned treatises based on years of data. You can't do much better than that. It won't be discarded until YOU PROVE it's false. Until then it's the gold standard for whatever topic is in question. You seem to be thinking of "hypothesis", a much less stringent concept requiring research to get it to the level of "Theory".
You are right, of course. This is so far a hypothesis. AGW does not yet rise to the level of a theory. There has recently been warming. Prior to that there was cooling and prior to that warming. The cooling period of the Little ice Age went on for about 250 to 400 years.
Our current warming has continued for about 230 years if we are to buy into the AGW story line.
The Medieval Warm period last for centuries also. During that warm period, things for humanity were pretty good. During the Little Ice Age, not so much.
We know that Glaciers are receeding to levels prevelant in a time about 5000 years ago. This means we are warming to that level: a level persistant between 8000 and 3000 BC.
Set in a historical perspective, the panic diminishes and we see a simple ebb and flow of climate change.
Superimposing the musings of those who seek funding or who covet the wealth of one nation for another does not add as much light as it adds heat to the debate. Pun intended.
Couldn't have said it better myself.