How Extinction Works
![How Extinction Works](https://www.podcastworld.io/podcast-images/stuff-you-should-know-ptoo9p5s.webp)
Scientists believe that 99% of the estimated 50 billion species that have ever lived on Earth have disappeared through extinction. This is a natural process typically, but it can also be cataclysmic and it's becoming clear we are amid a massive one.
Learn more about your ad-choices at https://www.iheartpodcastnetwork.com
See omnystudio.com/listener for privacy information.