These sonographs of bird song, in contrast to the sounds from traditional instruments, show complex patterns on a base frequency.
Bird song sonographs show distinct drawing patterns
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Surprise, Less Happiness During Pandemic
Since 1972, the General Social Survey has asked people about their happiness. It never changed much — until 2020 happened.
Television Genres Over Time
Here’s how the distribution of genres has changed since 1945 up to present.