Theranos founder Elizabeth Holmes joins a long cultural tradition of operators in and out of Silicon Valley who have bamboozled investors — and the world.

A year after the attack on the Capitol, there's a growing realization that traditional tools to counter extremism in the U.S. may not apply.

Biden didn't utter Trump's name but referred repeatedly to him with forceful, and at times personal, denunciations of his actions. "He's not just a former president. He's a defeated former president."

When brain researcher Laura Cuaya moved from Mexico to Hungary, she wanted to know if her two dogs would recognize the change in language. So she devised an experiment.