How Long Was Venus Habitable?

Re:How Long Was Venus Habitable? by mLuby on Sunday May 10, 2020 @10:23AM (#23132785)

There's a theory that the Sahara alternates between desert and green every X thousand years, dramatically altering the Mediterranean, European, and African climates.

And BTW our species is conducting its largest peaceful "mobilization" ever to deal with this virus; it's actually quite inspiring.

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Re:How Long Was Venus Habitable? by thaumasiotes on Sunday May 10, 2020 @09:59PM (#23138180)

> a theory that the Sahara alternates between desert and green every X thousand years, dramatically altering the Mediterranean, European, and African climates.

This is a funny way to phrase the causation. The state of the Sahara is surely not exogenous -- the transition must be caused by the climate. (It can then contribute further, but why attribute the changes to an intermediary effect?)

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