![The Discovery Files show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/014/590/small/the-discovery-files.jpg)
Summary: A new study from the University of Chicago reports that a mass extinction of fish 360 million years ago hit the reset button on life on Earth, setting the stage for modern vertebrate biodiversity.
Summary: A new study from the University of Chicago reports that a mass extinction of fish 360 million years ago hit the reset button on life on Earth, setting the stage for modern vertebrate biodiversity.