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Younger Dryas trigger: Cosmic Impacts or Volcanoes?

Update: Sweatman publishes paper outlining problems with the volcano theory An extensively covered journal article by Sun et al. in Science Advances concludes that volcanoes — not a fragmenting comet — caused the Younger Dryas. Sun provides an invaluable trove of data, but less than 72 hours after the publication their interpretation is suffering. In a wonderful demonstration of theā€¦
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Alpine Younger Dryas Impact evidence

New study from Argentina: Population crash in the Americas followed Younger Dryas comet impact