Comment on Realistically, what do people plan to do on the Moon and Mars that requires a permanent, or long term human presence there?

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WoodScientist@lemmy.world ⁨1⁩ ⁨day⁩ ago

Change - sure, probably - but there’s still plenty of nutrients and water for vast forests to continue existing there.

The soil itself is pretty barren in the Amazon. The vast majority of the nutrients and minerals in that biome are in the trees and plants themselves. Without the continual topping-up from the Sahara, the Amazon is on a ticking clock.

Gaze upon the Amazon River:

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Consider its breadth and depth. A titanic quantity of water, enough to drain a continent, emptying in endless torrent into the abyss of the sea. Except it’s not just water. Look at the color of it. It’s not blue; it’s brown. Consider the amount of water in that river. Then think of how much soil and dead plant matter must be flowing with it in order to turn it to such a rich chocolate brown.

That is where the Amazon’s phosphorous ultimately ends up. Nothing lives forever. Every plant and animal eventually dies. When it does, much of what it was gets recycled back into the plants and animals of the Amazon, but some doesn’t. A lot doesn’t.

Without the Sahara, the Amazon is on borrowed time.

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