Who's the daddy? There isn't one.

How do we know what we know about dinosaurs? Riley Black takes us back to the Mesozoic Era and explains how paleontologists piece together the lives of dinosaurs from often fragmentary clues. Guest: Riley Black, science writer, amateur paleontologist, and consultant for the Juras ...  Show more

A 2015 review found that most people in the US will experience a diagnostic error in their lifetime. Some of those errors are less devastating than others, but how can we help people get better answers about their health? One family's search for answers with a mystifying illness ...  Show more

We talk about different animals which can reproduce without having sex. 

<h2>Scientists Develop Human Embryo Model Without Sperm Or Eggs</h2>

This week, research published in the journal Nature detailed a model of a <a href="https://www.sciencefriday.com/segments/human-embryo-without-sperm-or-egg/?utm_source=wnyc&utm_medium=podcast&utm_campai ...

The Olympics is all about flying the flag for your home country, shoulder to shoulder with your team-mates. But what if you have no team-mates? At this year’s Olympic games, four countries had just one competitor. Like Sean Gill from Belize, Somalian runner Ali Idow Hassan, or Ro ...  Show more

You're familiar with the story: a sperm and an egg meet to create an embryo, which has the potential to give rise to new life. But what if you could create a sperm or egg from any cell, even a single skin cell? Biologist Katsuhiko Hayashi discusses the science of in vitro gametog ...  Show more