Renee Klahr

Decades ago, researchers introduced a new theory of policing. It's called "broken windows" and is seen by many as a cure-all for crime. But the idea is often used in ways its creators never intended.

Trump the president has done little to separate himself from Trump the businessman. This video explains why that's the case and what we know and don't know about the president's financial ties.

Many Americans are increasingly expressing their political beliefs with their wallets. Neeru Paharia explains how we use money to tell stories about ourselves, and to ourselves.

This week on Hidden Brain, the stories of two men who showed empathy for the other side and found themselves labeled "enemy" by their own people.

Maz Jobrani, an Iranian-American comedian, uses humor to critique President Trump — whom he describes as "good for comedy but bad for the world."

President Trump's executive order on refugees left travelers stranded at airports worldwide. To some, the scenes evoked images of Jewish refugees during World War II. We investigate the parallels.

Millions of Americans seem to ignore their own interests when it comes to how they vote. Sociologist Arlie Hochschild thinks we might be turning to politics to meet emotional needs, not economic ones.

It's in our nature to idolize the rich and famous. But this week on Hidden Brain, we explore the other side of our nature: the part of us that wants to see the rich and powerful fall from grace.

Young people have always used language in new ways, and it has always driven older people crazy. But the linguist John McWhorter says all the LOLs are part of an inevitable evolution of language.

In Liberia, a team of epidemiologists have to delay a criminal investigation, look the other way on illegal drug use and build trust to stop an outbreak of Ebola.