The Neanderthals walked the hills and plains of Europe and Asia for nearly 400,000 years before completely disappearing nearly 40,000 years ago.
Why Smiling Is So Contagious
Cheeeeeeese! Showing off your pearly whites isn’t just something we do for pictures. We tend to smile any time we seem to be enjoying ourselves. In America, I’ve noticed we smile at strangers, especially in the south.
