HEAVY METAL
Radiolab
00:00
The Problem With Rocks on Earth When You Try to Date Them
Rocks on earth when you try to date them, um, there's not good dates. So somehow you need to get your hands on a rock that you know for sure formed at the same time as the earth. And how could you possibly do that? Well, what pat had to do is go to the very centre of an explosion that was about a thousand times bigger than the bomb that was dropped on heroshima. Here's actually went there, met up with this guy.
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