Trump’s Folly

America faces two serious national security threats today that look wildly different but have one core feature in common — they both have a low probability of happening, but, if they did happen, they could have devastating consequences for our whole country and the world.

One of these threats is called North Korea. If the reckless leader of North Korea is able to launch an arsenal of intercontinental ballistic missiles that strike the U.S. mainland, the impact on America will be incalculable.

.. The other low-probability, high-impact threat is climate change fueled by increased human-caused carbon emissions. The truth is, if you simply trace the steady increase in costly extreme weather events — wildfires, floods, droughts and climate-related human migrations — the odds of human-driven global warming having a devastating impact on our planet are not low probability but high probability.

.. Of course they aren’t solely responsible. The climate has always changed by itself through its own natural variability. But that doesn’t mean that humans can’t exacerbate or disrupt this natural variability by warming the planet even more and, by doing so, making the hots hotter, the wets wetter, the storms harsher, the colds colder and the droughts drier.

That is why I prefer the term “global weirding” over “global warming.” The weather does get warmer in some places, but it gets weird in others. Look at the past few months: Not only were several big U.S. cities slammed by monster hurricanes, but San Francisco set a heat record — 106 degrees on Sept. 1, a day when the average high there is 70 degrees

.. Indeed, it is safe to say, that if we overprepare for climate change and nothing much happens, it will be exactly like training for the Olympic marathon and the Olympics get canceled. You’re left with a body that is stronger, fitter and healthier.