Fear has a scent. Here’s how this invisible chemical signal has shaped human perceptions, emotions and survival instincts.

Each October, as Halloween decorations appear and horror movies fill streaming queues, people across the country indulge in fear. Haunted houses sell out, thrill-seekers line up for roller coasters ...

Without the security of a regular paycheck, it’s easy to worry about running out of money in your so-called “golden years.” ...

For millions of people, air travel is a routine part of life. But for others, the thought of stepping onto a plane sparks intense anxiety or even panic. Known as aerophobia — or more simply, fear of ...