For all the progress made in fighting cancer, it still kills 10 million people a year, and some types remain especially hard to detect and treat. Pancreatic cancer, for instance, is nearly always fatal. A new clinical-trial platform could change that by aligning institutions that typically compete against one another.

It’s a powerful biological response that has preserved our species for millennia. But now it may be keeping us from pursuing strategies that would improve the environment, the economy, even our own health. So is it time to dial down our disgust reflex? You can help fix things — as Stephen Dubner does in this episode — by chowing down on some delicious insects.

They can’t vote or hire lobbyists. The policies we create to help them aren’t always so helpful. Consider the car seat: parents hate it, the safety data are unconvincing, and new evidence suggests an unintended consequence that is as anti-child as it gets.

We’ve collected some of our favorite moments from People I (Mostly) Admire, the latest show from the Freakonomics Radio Network. Host Steve Levitt seeks advice from scientists and inventors, memory wizards and basketball champions — even his fellow economists. He also asks about quitting, witch trials, and whether we need a Manhattan Project for climate change.

Societies where people trust one another are healthier and wealthier. In the U.S. (and the U.K. and elsewhere), social trust has been falling for decades — in part because our populations are more diverse. What can we do to fix it?

In this episode of No Stupid Questions — a Freakonomics Radio Network show launched earlier this year — Stephen Dubner and Angela Duckworth debate why we watch, read, and eat familiar things during a crisis, and if it might in fact be better to try new things instead. Also: is a little knowledge truly as dangerous as they say?

Patients in the U.S. healthcare system often feel they’re treated with a lack of empathy. Doctors and nurses have tragically high levels of burnout. Could fixing the first problem solve the second? And does the rest of society need more compassion too?

The incoming president argues that the economy and the environment are deeply connected. This is reflected in his choice for National Economic Council director — Brian Deese, a climate-policy wonk and veteran of the no-drama-Obama era. But don’t mistake Deese’s lack of drama for a lack of intensity.

Tony Hsieh, the longtime C.E.O. of Zappos, was an iconoclast and a dreamer. Five years ago, we sat down with him around a desert campfire to talk about those dreams. Hsieh died recently from injuries sustained in a house fire; he was 46.

G.M. produces more than 20 times as many cars as Tesla, but Tesla is worth nearly 10 times as much. Mary Barra, the C.E.O. of G.M., is trying to fix that. We speak with her about the race toward an electrified (and autonomous) future, China and Trump, and what it’s like to be the “fifth-most powerful woman in the world.”