In his classic book The Dragons of Eden, astronomer Carl Sagan tidily summarized the central challenge scientists face when they try to formulate grand new theories: “Remarkable claims require ...

A new viral TikTok trend says you can test your partner’s love with “bird theory.” And according to decades of psychological research, it’s not as silly as it sounds. If you’ve been confused about all ...

A simple relationship test called the “bird theory” is spreading on TikTok as a way to find out if your partner even cares. All you have to do is point out something not particularly interesting, like ...