How would you explain wedding rings to an extraterrestrial? What about a birthday cake, or fireworks on New Year’s Eve? Why do we do things the way that we do them? We take on customs from our ancestors and teach them to the next generation, often without examining them. But when we take a step back, they can seem bizarre, arbitrary…and sometimes profoundly beautiful.

Join Sasha Sagan, author of For Small Creatures Such as We, for Strange Customs, a podcast about how weird we Earthlings can be.