5: Building the Underworld

How did Earth grow from ant-size to, well… Earth-size? What perils did it face along the way? And how is the Earth's interior like a fine vinaigrette? Find out as we move forward in time from 4.6 to 4.5 billion years ago.

Extra credit: try to freeze a mixture of oil and vinegar before they separate, find an iron meteorite at your local museum, or look for Ceres with a pair of binoculars.

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About the Podcast

Bedrock: Earth's Earliest History

Explore Earth's history from the beginning.

This podcast starts at the beginning of Earth's prehistory and works forward through time. Bedrock will explore the first 90% of Earth’s past, a time known as the Precambrian Era. Before humans, before dinosaurs… there was the Precambrian.
The Earth was an incredibly alien world, but not a dead one.
Along the way, you will build a mental toolkit to see the world like a geologist. You will never look at a mountain, the moon, or pond scum in quite the same way again.

Welcome to Bedrock.
For transcripts, visuals, and references, check out https://www.bedrockpodcast.com