The human body is not a patchwork of separate systems. It's intricately connected, says neuroscientist Lisa Mosconi. She explains the relationship between our brains, hormones and reproductive organs.

Over a century ago, one part of our DNA got labelled the "sex chromosomes." Science and radio journalist Molly Webster explains the consequences of that oversimplification.

Artist Emily Quinn is intersex. She's one of over 150 million people in the world who don't fit neatly into the categories of male or female. She explains how biological sex exists on a spectrum.

Researchers are testing sewage in hopes of getting a jump on COVID-19 outbreaks in communities — monitoring for when they begin and how quickly they spread.

In his new book, The Human Planet: Earth at the Dawn of the Anthropocene, George Steinmetz offers a bird's-eye view of the mark humans have made on the global landscape.

NPR's Scott Simon explains why protective masks for frontline workers are still in short supply, while fashion masks for the rest of us seem to be readily available.

On this week's radio show, we trace the history of fake news. Plus, in a time when accurate information is so important, we ask who ultimately bears the cost when no one wants to pay for local news.

Ranger Peter Densmore has a front row seat on the beginning of spring in the national park. With the absence of visitors, prairie dogs have overrun the roads and other wildlife have grown bold.

Global energy demand, particularly for coal, is falling sharply this year, the International Energy Agency says. The drop is caused by weather patterns and COVID-19 shutdowns.

Author Bonnie Tsui reminds us that humankind once sprang from — and still seeks — water. "Even if we can't get in the water right now," she says, "the ocean will be waiting for us."