I've gone back and forth on the global warming issue (the "experts" should stop calling it climate change), but over time the vast accumulation of data by sensors and thermometers all over the world, terrestrial, oceanic, and orbital, conclusively proves that global mean temperature is rising.
And rising fast.
You can't accuse a thermometer of bias.
How much is the product of natural climatic cycles and how much is human-induced is debatable, but that the world is heating up is not, and if it continues on its current trajectory then mass worldwide famines are all but assured.
