Handshakes' Purpose Could Be to Send Scent Signals

Shaking a person’s hand is so routine it seems meaningless. But as it turns out, this gesture could be more than a social courtesy: it could be humans’ way of coming into contact with another person’s smells.

Just about every mammal sniffs newcomers to find out who they are and where they’ve been – but for humans, an introductory sniff is clearly taboo. And yet, as a team led by Noam Sobel, Chair of Neurobiology at the Weizmann Institute of Science in Israel has just found, we may sniff o

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