Shrug.
There is a reason hardly anybody reads National Geographic anymore. They have developed a skill for taking an interesting subject and making it dry as hell.
The quest for the ancient 'shrooms.
Seems the weight of evidence is tilted toward a series of catastrophic extraterrestrial and terrestrial events, including a layer of iridium mixed with ash, et cetera that are concurrent to the Younger Dryas. Science is a long process of work not a short article in National “there is global warming because we wrote a few articles that say so—trust us you are idiots” Geographic.
additional topics from the archives:
The Cycle of Cosmic Catastrophes:
Flood, Fire, and Famine
in the History of Civilization
by Richard Firestone,
Allen West, and
Simon Warwick-Smith
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Nanodiamonds are a nanogirl’s best friend.
That’s right. The causes of the recent extinctions were substantially more major than a comet impact.