The Origins Podcast with Lawrence Krauss cover image

Andy Knoll: The First Four Billion Years of Life on Earth

The Origins Podcast with Lawrence Krauss

00:00

The Earth's Cooling Through the Soap Butt

There are no terrestrial rocks older than four billion years, there are some terrestrial mineral particles older than 4 billion years. If you poke around in those sand grains that are accumulating around the coast to day, you will find zercons from that. Thoseo sand zircons are the geologist's friend, because they contain a small amount of uranium, and some of that is radioactive. And we know from laboratory observations and experiments the rate at which uranium breaks down to lead. They're chronometers there. So i wanted won now if you could take me through that, and i and also take me through a your own research in that regard.

Transcript
Play full episode

The AI-powered Podcast Player

Save insights by tapping your headphones, chat with episodes, discover the best highlights - and more!
App store bannerPlay store banner
Get the app