19: The Hitchhiker's Guide to the Galaxy

How did the ingredients of life arrive on Earth?

Today, we look at how asteroids brought organic material from the depths of space to Earth's surface. On the way, we'll run into an old friend from Episode 4, meet an ancient Greek astronomer, and search for aliens hidden in Antarctic ice.

Extra credit: Eat something with glutamic acid in it- meat, mushrooms, or soy sauce. Extra extra credit if you can have all three at once.

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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