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What’s Inside the Oldest Rocks in the World?

Season 13 Episode 3 | 16m 40s

The oldest rocks on Earth are more than just ancient—they’re time machines, holding clues to Earth’s missing history and revealing what happened in the unknown times after the Big Bang. We’ll work with our Adam and Joss from Howtown to learn more and visit our friends at The Smithsonian to examine some of these beyond-ancient rocks ourselves.

Aired: 03/30/25
Extras
Seedless fruits are delicious, convenient… and completely unnatural.
What does randomness really mean? And why your digital life depend on it?
Why do we have different blood types? And why do we have blood at all?
How did dinosaurs become birds—and what good is half a wing?
Just how big would a telescope need to be to actually see an alien world in detail?
Dire wolves are back—sort of.
The key enzyme behind photosynthesis isn’t actually all that great at its job.
This is one of the weirdest mysteries of human evolution: Why do we have grandmas?
Insects and birds have an awesome superpower that repels water and keeps them airborne in the rain.
Why do some people taste music or hear colors? Let’s talk about synesthesia.
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Seedless fruits are delicious, convenient… and completely unnatural.
What does randomness really mean? And why your digital life depend on it?
Why do we have different blood types? And why do we have blood at all?
How did dinosaurs become birds—and what good is half a wing?
Just how big would a telescope need to be to actually see an alien world in detail?
Dire wolves are back—sort of.
The key enzyme behind photosynthesis isn’t actually all that great at its job.
This is one of the weirdest mysteries of human evolution: Why do we have grandmas?
Insects and birds have an awesome superpower that repels water and keeps them airborne in the rain.
Why do some people taste music or hear colors? Let’s talk about synesthesia.