Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Neuroscience tells us that love is caused by ...

For millennia, philosophers, prophets, and poets have debated and theorized about love: what it is, how to describe it, how to cultivate it. Scientists, not so much. Indeed, only in recent decades ...