Скачать или смотреть There’s a 4 Billion Year-Old Secret Hiding in This Rock (feat.

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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.

Thank you to geochronologists Mike Ackerson and Jesse Reimink for helpful background discussions

Thank you to ‪@Howtown‬ Go check out our collab over on their channel!

0:00 Holding the oldest rocks ever
0:56 The geologic calendar
3:06 Zircon - the Time Lord
4:58 The Oldest Thing on Earth
5:54 Where to find very very very old rocks
9:03 Gneiss guys finish first
10:50 How do we know how old these rocks are?
13:50 A new picture of the early Earth
16:30 Follow me to Howtown!

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