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by mrb 3271 days ago
They say it could have been caused by an asteroid, but don't explain why this theory is seemingly discarded.

Edit: 2min of googling and I find a not very well know 20km impact crater dated at exactly the right time (mid 15th century): https://en.m.wikipedia.org/wiki/Mahuika_crater
2 comments
Taniwha 3271 days ago
You'll notice that Wikipedia includes it in: https://en.m.wikipedia.org/wiki/List_of_unconfirmed_impact_c...

it's existence/size/effects is controversial to say the least, TV shows about it show up on the History channel along with all the ancient aliens crap

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mirimir 3271 days ago
I doubt that impacts would inject as much sulfate as was observed in the ice cores.
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