Let’s Talk about the Science of Kissing with It’s Okay To Be Smart [Video]

Kissing is fun, but it’s also incredibly weird. Like, who was the first person to think, “Hey that person is cute, I would like to exchange saliva with them and possibly accidentally knock them in the teeth?” Luckily, the reassuringly titled PBS web series It’s Okay To Be Smart is here to tell us just why kissing feels so good in the first place.

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