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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Unemployment in America, Mapped Over Time
Watch the regional changes across the country from 1990 to 2016.
Income Taxes You Would Pay in Each State
Some states have high rates. Some have low. But whether a state is lower or higher for you depends on more than just the high brackets.