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Friday, June 21, 2024

Sunspots 965

Things I have spotted that may be of interest to others:


Scientific American discusses tattoo ink. We don't really know what's in it. 

Scientific American also discusses the discovery of irrational numbers. We don't know that history very well.

Science Friday and other outlets report that elephants have names for other elephants.

NPR reports that some woodpeckers peck on metal to make a lot of noise, and explains why they do this.

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