Researchers have developed a model to explain the science of near-death experiences. Others have challenged it.

In this account, ad­vanced by Thomas Philbeck and Nicholas Davis of the World Economic Forum, analog machines replaced human ...

For decades, scientists have tried to answer a simple question: why be honest when deception is possible? Whether it is a peacock's tail, a stag's roar, or a human's résumé, signals are means to ...