I remember listening to that conversation.....IIRC, it was a congressman asking an admiral about the impact of landing ships on Guam. It left me speechless.
I remember in the 70's, the climate scientists were alarming the world with "the earth is cooling, the earth is coolig!".
Watching these science shows, they think ~500m years ago the atmosphere was toxic, full of toxic and acidic gases. About every 2m years, or so, the magnetic poles flip, at which point we have limited protection from space radiation and mass extinctions were likely. There is evidence that at one time the entire planet was covered with ice, not simply an ice age. Volcanos spew billions of tons of crud in the atmosphere every year. We banned CFCs and the holes in the ozone are as big as ever.
The list goes on....when Yellowstone erupts, I'll gab a lawn chair and a beer.






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