The water you just drank has been here longer than the rocks around you.
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Chapters
0:00 Take a Sip
0:56 Five Clocks in One Glass — Starting With the Tap
2:41 Purification Does Not Reset the Clock — and Neither Does the Bottle
4:08 The Watershed Before the Pipe — What "Groundwater Age" Means
5:44 Water That Fell Before History — and Why That Age Is Not Only Philosophical
7:13 The Ocean Is Not One Old Bowl — and Water Enters the Deep Earth
8:49 A Molecule Can Lose Its Identity — and the Cloud Did Not Create the Water
10:29 Atoms Older Than the Sun — Oxygen From Stars, Hydrogen From the Beginning
12:00 When Earth Became Wet — the Zircon That Remembered Water
13:27 Isotopes Act Like Travel Clues — in Rain, in Ice, and in Comets
15:32 Residence Time — and Why Mixing Erases a Single Age
16:47 The Answer — Five Clocks, One Sip
17:52 After the Answer — Where the Water Goes Next, and Whether a Dinosaur Drank It
19:20 Final Reframe — Borrowed for a Moment
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A new episode every week.
This channel takes one ordinary thing and follows it until it stops being ordinary.
If you spotted an error, say so in the comments. Corrections get pinned.
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Credits
Footage: NASA · NASA/CXC · NASA/Goddard/Univ. of Arizona · NOAA · USGS/NSF
Pexels: Sergei Starostin, Allen Y, Florian Delée, Ilya Klimenko, Roman Odintsov
Sound effects: Mixkit
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