Seven totally safe science discussion topics for Thanksgiving dinner

This Thursday, many of us will gather with the people in our lives for whom we're grateful. But as much as we may love each other, sometimes we don't see eye-to-eye on politics, relationships, religion, gender, sexuality, fashion, money, dogs, or even the very nature of reality. So instead of arguing over how the government should spend tax dollars or whether your cousin has too many facial piercings, let's talk about science. We've compiled a list of seven science topics from this year __that (hopefully) won't start an argument. (We make no guarantees, though, since we all know Aunt Linda is a world-class know-it-all.)