A developing frog embryo in its jelly-like egg mass can be quite the escape artist: When predators come calling, the red-eyed tree frog embryo can detect the threat and drop out of its egg to safety ...

An unbelievable home experiment reaches its most exciting moment as nearly 12 million tiny eggs prepare to hatch. Follow the incredible journey from the beginning of this fascinating project to the ...

That’s a frog embryo, leaving its egg to enter the world, and this embryo can hatch at will. The red-eyed tree frog lays its eggs on a branch or leaf above the water. Once they’re in the last third of ...

The rest of this article is behind a paywall. Please sign in or subscribe to access the full content. Glassfrog embryos know when they’ve been abandoned. Luckily, they’re flexible, adapting well to ...

March 23 — To the Editor: In spring or fall of the school year, many teachers will place fertilized eggs in incubators in their classrooms which will hatch within 3-4 weeks, ostensibly to teach ...