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it's monday june 27th twenty twenty. I'm Jackson Bird today. Do groups of friends all smell alike?

Plus, an astonishingly well-preserved 30,000-year-old woolly mammoth baby was just discovered.

And we finally have photographic evidence of that mysterious rocket

stage that hit the moon in March. Here's some cool stuff for your ride home. What is the measure of a friendship?

Is it sharing similar interests, values, a compatible sense of humor, an established

sense of trust with one another? Or is it simply smelling the same? A new study published recently

in the journal Science Advances suggests it could be the latter. Researchers from the Wiseman

Institute of Science and Israel conducted a study showing that, at least for their smaller sample size, friends tend to smell like each other, and that it probably occurs because we self-select people that smell like us from the beginning, not because our sense change over the course of a friendship. Or, as scientific American put it, we hairless hominens

may not be so different from dogs, rodents, and non-human primates as we like to think.

And that we humans subconsciously rely on the sense of smell to suss one another out is a long-standing

thought with a fair amount of evidence to back it up in

different directions. You know, think about how much you hear about pheromones when it comes to

romantic attraction. So, neuroscience grad student in Ball Ravraby hypothesized that

scent may be one of the many factors contributing to how we pick friends. To build her sample,

Ravraby recruited same-gender non-romantic friends who we pick friends. To build her sample, Ravreby recruited same-gender, non-romantic

friends who had become friends very quickly, BFFs at first sight, essentially, and collected body odor

samples from the friends, quoting Scientific American, for three days participants gave up

...