Over time, it's been both much colder and a good bit warmer, than it is today. It's been reported that the hottest years of the past century was 2006 until NASA found their math was wrong: it was actually 1934.

The 1962 publication of Rachel Carson's classic "Silent Spring" marks the beginning of a sea change: the mass attack on technology and progress as a whole, for environmental reasons.

Somebody in Europe has realized what's crystal clear to anyone with a brain: reducing carbon emissions destroys your economy.