As intelligence goes up, happiness goes down. See, I made a graph. I make lots of graphs.— Lisa Simpson. The Simpsons. Episode 257. January 7, 2001.
Lisa Simpson on Happiness vs Intelligence
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Deaths by Firearm, Compared Against Injury-Related Deaths
Among 1- to 19-year-olds, regulations decreased motor vehicle deaths, but deaths by firearms increased and became the leading mechanism in 2018.
Air Quality Mapped Over Time
With wildfires burning in the western United States, smoke fills the air. This is an animation of the air quality during the past couple of months.