Even in Paris's hard-drinking intellectual circles, French philosopher and feminist icon Simone de Beauvoir found that a glass of wine hit harder than expected. De Beauvoir once joked that two glasses ...

(The Conversation) – 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. Why do people have two sets ...