In last night's debate, Santorum accused both Romney and Gingrich of buying into the "global warming hoax". It's very disturbing that a presidential candidate still cannot buy into clear scientific data. There is room for debate about the extent of global warming, and possibly even the root cause (although that latter point is almost universally closed as well). But to say that it doesn't exist? Crazy.
In 1880, when modern global temperature records began, atmospheric carbon dioxide levels were at 285 parts per million. In 2011, they are were over 390 parts per million. We know this. We can measure it. It's not hard. It's undeniable.
As we’ve spewed greenhouse gas emissions into the atmosphere at at a faster pace, global temperatures have accelerated upward, particularly since the 1970′s. To illustrate this rise, NASA’s Goddard Institute for Space Studies released this fascinating video earlier this week, showing 131 years of temperature records edited into a 30-second video:
Now, to deny global warming, you would necessarily have to take the position that NASA is either (a) making the numbers up or (2) miscalculating the numbers. That is, NASA is either evil or stupid.
Until global warming deniers are unequovically take one of those two positions, and prove it, they need to shut up so the grown-ups can think and discuss a policy to fix the problem.