However, only one of these is a “genuine” or Duchenne smile. Discovered by French anatomist Duchenne de Boulogne in 1862, the key difference between this “real” happy smile and a “fake ...

Truthfully, any vacation would make most people happy. However, there's one region in particular that makes more tourists smile than any other. According to Casago, happy tourists smile the most ...

While it is not a classic smile as we know it, this sort of expression could indicate your cat is feeling happy and content." If you've ever wondered why cats blink, you'll be pleased to find out ...