Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Good luck hiding how you feel. Researchers from Penn State ...

We’ve all faked a smile at some point—to respond politely to a bad joke in a Zoom meeting, to show appreciation for a gift that misses the mark, or to cover up personal discomfort and sadness. But ...

Michelle Spear does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...