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Why and when the Sahara Desert was green: new research

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Re: Why and when the Sahara Desert was green: new research

#101

Earlier quoted context omitted.

It's like how the model for a snow slab doesn't prove there was a snow slab that slipped over the Dyatlov Pass tent that night, despite what the media claimed about the case being solved. It only shows that it could have, assuming the data and assumptions are correct for that specific location. Or models showing some solution to the Fermi Paradox, and proponents claiming that the mystery is finally solved. How do the…

Because the only thing you can ever have is a theory. The strongest theory is the one that gets chosen. Theories vary in strength over time. Nothing is ever solved or proven. Theories get stronger and stronger evidence. Believing in a theory doesn't in any way help you make sense of the world. We just do it for expediency of communication.

> Because the only thing you can ever have is a theory.

Here's mine: there is a "correct" set of theories (or truths) that the universe adheres to, we're just nowhere close to even guessing at them yet. But current theories can be closer or farther to them

Re: Why and when the Sahara Desert was green: new research

#102
post #86

Earlier quoted context omitted.

> and killed 90% of Europeans & North Americans at the time (55M people). That’s very far fetched. > which is believed By whom? The little ice age peaked in the 1600s.

https://en.wikipedia.org/wiki/1257_Samalas_eruption > The eruption may have helped trigger the Little Ice Age, a centuries-long cold period during the last thousand years. https://en.wikipedia.org/wiki/Little_Ice_Age > In a 2012 paper, Miller et al. link the Little Ice Age to an "unusual 50-year-long episode with four large sulfur-rich explosive eruptions, each with global sulfate loading >60 Tg" and notes that "larg…

> the populations reduced by ~90%.

Specifically in the Americas, not the whole world. Also I don’t see how climate change was the cause.

European population had already recovered to its pre black death peak by the 1400s and had significantly surpassed it by 1500 (78 vs 90 million).

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