Much has changed in how we understand and treat eating disorders. Some significant aspects have remained consistent or ...

Contrails have a simple explanation, but not everyone wants to believe it. AP Photo/Carolyn Kaster Calum Lister Matheson, University of Pittsburgh Online influencers with millions of followers have ...

Everyone has looked up at the clouds and seen faces, animals, objects. Human brains are hardwired for this kind of whimsy. But some people—perhaps a surprising number—look to the sky and see ...

Calum Lister Matheson 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 ...