In classic xkcd-fashion, Randall Munroe timelines the Earth’s temperature, dating back to 20,000 BCE up to present. Slow changes, slow changes, history, slow changes, still slow changes, and then, oh shoot.
xkcd: Earth temperature timeline
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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.
If We All Left to “Go Back Where We Came From”
Imagine that those with immigrants in their family tree left the country. Almost everyone, basically.