Ape Jokes, Vagus Nerve Hopes and a Mystery Planet
Briefly

Anthropologist Erica Cartmill notes that the evolutionary origins of joking illustrate the similarities between humans and great apes, as young orangutans and chimps engage in playful behaviors like peekaboo, which reveals our shared heritage.
Research into the vagus nerve suggests it's crucial for health, with evidence supporting its influence in treating various conditions, countering claims from those marketizing unfounded cures.
The search for Planet Nine creates excitement within astronomy, as evidence mounts of a planet beyond Pluto, potentially five to ten times Earth's mass, affecting smaller celestial bodies.
Read at www.scientificamerican.com
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