The Scientist Hunting for Cave Crystals to Understand Climate Change
Credit to Author: Emma Fidel| Date: Mon, 09 Dec 2019 13:51:15 +0000
These 30,000-year-old crystals formed when permafrost melted in the last Ice Age.
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The Secret Lives of People Obsessed with Going Deep Underground
Credit to Author: Philip Eil| Date: Tue, 29 Jan 2019 13:00:59 +0000
There’s urban exploring, and then there’s the primordial obsession with going way below the Earth’s surface.
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