xkcd poked fun at the sometimes questionable color choices of researchers.
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Working towards the ultimate Sunday crossword.
See how your country compares.
Here’s a chart to show you how long you have until you start to feel your age.
Based on the “half-your-age-plus-seven” rule, the range of people you can date expands with age. Combine that with population counts and demographics, and you can find when your non-creepy dating pool peaks.