Betsy Trice: The pip is the very first crack in the shell that you’ll see. And the chicks create this from something called an egg tooth. It’s a little hard growth that’s on the tip of their beak. And ...

Researchers have developed a method for culturing fertilized chick eggs without their shells. The eggs were placed in an artificial culture vessel made of transparent film, allowing for real-time ...

Why did our ancestors ditch the shell and start growing babies inside their bodies instead? In this episode of Big Ideas, ...