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sarahbalick

Killer Meteorite Did Not Hit Indian Man - The Daily Beast - 0 views

  • Killer Meteorite Did Not Hit Indian Man
  • Though it first appeared as if a bus driver in India was killed by a meteorite this week, scientists and local officials say his death was more likely caused by
  • “a land-based explosion.”
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  • Images depicted a crater measuring five feet deep and two feet wide, and witnesses said they heard an explosion. The object recovered from the site allegedly weighed only a few grams. The event would have been the first case in history of someone dying from a meteorite’s impact.
delgadool

Meteorite or Volcano? New Clues to the Dinosaurs' Demise - The New York Times - 0 views

  • Some 66 million years ago, forests burned to the ground and the oceans acidified after the Chicxulub meteorite hit Earth in the Gulf of Mexico. Around the same time, on the other side of the planet, erupting volcanoes were busy covering much of the Indian subcontinent with lava, forming the Deccan Traps.
  • The meteorite, according to a team of scientists, was the chief perpetrator, while the volcanism, driving climate change in the background, might have affected life’s recovery in the wake of the impact.
  • The group found that global temperatures were much lower around the time of the extinction than they should have been if volcanoes were expelling large amounts of carbon dioxide. The volcanism, Dr. Hull explained, stopped seeping carbon dioxide into the atmosphere some 200,000 years before the Cretaceous ended and the age of mammals began. That means any harmful warming caused by carbon dioxide was already over by the time the meteorite hit.
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  • This volcanism-induced warming, far-removed from the extinction, casts blame squarely on the Chicxulub event. “I’m sure the debate will rage on, because there are entrenched voices on either side,” Dr. Brusatte said. “But it’s getting harder and harder to fathom that the asteroid was innocent.”
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