We love a good backstory to a scientific invention that is ubiquitous today. Meet the women who got pregnancy tests out of labs and into homes.

The Invention of the Home Pregnancy Test

Transistor is podcast of scientific curiosities and current events, featuring guest hosts, scientists, and story-driven reporters. Presented by radio and podcast powerhouse PRX, with support from the Sloan Foundation.

Natural Sciences

Science & Medicine

Science

Vaccinations, in one form or another, have been around longer than the United States. In fact, during the Revolutionary War in 1776, future first lady Abigail Adams pursued the controversial scientific technique to protect her 5 children against a threat more dangerous than an army of Redcoats. Here’s Luke Quinton with the story.

No Inoculation without Representation!

Cosmic rays from outer space sound like science fiction. They’re not—invisible particles flung from outer space pass through our bodies every minute. But not all cosmic rays are equal; Some are immensely powerful and very rare. For decades scientists have wondered where they're coming from – and what could possibly be hurling them at Earth. Now, they're getting closer to finding out.  Ross Chambless has the story.

Cosmic Ray Catchers

Every October 16th hundreds of people gather in Dublin to celebrate Ireland's greatest mathematician, William Rowan Hamilton. And get this – It was his act of vandalism on Broom Bridge in 1843 that put him in the history books – it actually changed mathematics forever. Samuel Hanson brings us the story.

Three Letters on Broom Bridge

Hurricanes Harvey and Irma left devastation in their wake all across the southern United States as unimaginable quantities of water swallowed up small towns and cities alike. But what happens to that water and how can cities better prepare ahead of time? Two years ago, reporter Jenny Chen followed two so-called flood hydrologists to learn more about the preparation.

After A Flood

What if the size of our dinner plate, its color, the material of our cutlery - even background sounds - all affect how our food tastes? In other words, what if it’s not just about what we cooked for dinner, but the context of the meal itself?

Reporter Quentin Cooper brings us this story.

The Invention of the Home Pregnancy Test

Download our free app to listen on your phone