Megavolcanoes tied to pre-dinosaur mass extinction: An apparent sudden climate shift could have analog today

Scientists examining evidence across the world say they have linked the abrupt disappearance of half of earth's species 200 million years ago to a precisely dated set of gigantic volcanic eruptions. The eruptions may have caused climate changes so sudden that many creatures were unable to adapt -- possibly on a pace similar to that of human-influenced climate warming today. The extinction opened the way for dinosaurs to evolve and dominate the planet for the next 135 million years.

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