Study finds asteroid impact, not volcanoes, made the Earth uninhabitable for dinosaurs: ...
confirms that an asteroid impact 66 million years ago – not volcanic eruptions – killed off most of the dinosaurs on Earth. "Our study confirms, for the first time quantitatively, that the only plausible explanation for the extinction is the impact winter that eradicated dinosaur habitats worldwide," said study lead author The asteroid strike would have released particles and gases high into the atmosphere, blocking out the sun for years and causing permanent winters, the study said. The only dinos to survive were the species that went on ...
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