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xkcd #3283: Size and Lifespan
(imgs.xkcd.com)
Title text:
With their 13 years recording and performing together and two humans worth of mass, the White Stripes are sandwiched neatly between gray wolves and blue whales.
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3283/
Oh, protons! I misinterpreted the typo as proteins.