Other scientists, like James Hansen, have an even gloomier view of how much more warming the planet can take. Hansen now argues that we need to lower the limit of "acceptable" warming by a whole degree to 1 degree Celsius -- a number we're already dangerously close to reaching.
At this point, there is no other option -- we have to completely commit to a Manhattan Project-style effort on the part of our government to decarbonize our transportation, heating and electric systems.
We won World War II in four years; we could tackle climate change in an even shorter time-frame just by using technology that's already there.
The stakes are as high as they come when it comes to climate change, but it's also an opportunity to fundamentally transform our economy for the better, and create millions of jobs in the process.
A good crisis, it's often said, should never go to waste.
We have a very small window left.
Let's do our best to take advantage of it.
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