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  2. Cretaceous–Paleogene extinction event - Wikipedia

    en.wikipedia.org/wiki/Cretaceous–Paleogene...

    Prolonged cold is unlikely to have been a reason for the extinction of non-avian dinosaurs given the adaptations of many dinosaurs to cold environments. [132] Whether the extinction occurred gradually or suddenly has been debated, as both views have support from the fossil record.

  3. Chicxulub crater - Wikipedia

    en.wikipedia.org/wiki/Chicxulub_crater

    The aftermath of the asteroid collision, which occurred approximately 66 million years ago, is believed to have caused the mass extinction of non-avian dinosaurs and many other species on Earth. [13] The impact spewed hundreds of billions of tons of sulfur into the atmosphere, producing a worldwide blackout and freezing temperatures which ...

  4. Timeline of Cretaceous–Paleogene extinction event research

    en.wikipedia.org/wiki/Timeline_of_Cretaceous...

    John M. Cys argued that dinosaurs went extinct because they were unable to hibernate during the winter, leaving them doomed by Earth's changing climate. [23] 1968. Daniel I. Axelrod and Harry Paul Bailey proposed that the dinosaurs were driven extinct when Earth's climate began exhibiting more marked seasons rather than stable conditions year ...

  5. After 66 million years, scientists discover there wasn’t just ...

    www.aol.com/66-million-years-scientists-discover...

    A six-mile-long asteroid, which struck Earth 66 million years ago, wiped out the dinosaurs and more than half of all life on Earth.The impact left a 124-mile-wide crater underneath the Gulf of ...

  6. Asteroid that killed the dinosaurs was water-rich and ... - AOL

    www.aol.com/dinosaur-killer-rare-asteroid...

    "So the one that killed the dinosaurs is really special in two ways — by what it did, and also by where it originated." This apocalyptic object is what created the Chicxulub crater on Mexico’s ...

  7. Asteroid that doomed the dinosaurs halted a key process for ...

    www.aol.com/asteroid-doomed-dinosaurs-halted-key...

    Fine dust thrown up into Earth’s atmosphere after an asteroid strike 66 million years ago blocked the sun to an extent that plants were unable to photosynthesize, a new study has found.

  8. Alvarez hypothesis - Wikipedia

    en.wikipedia.org/wiki/Alvarez_hypothesis

    Luis Walter Alvarez, left, and his son Walter, right, at the K–T Boundary in Gubbio, Italy, 1981. The Alvarez hypothesis posits that the mass extinction of the non-avian dinosaurs and many other living things during the Cretaceous–Paleogene extinction event was caused by the impact of a large asteroid on the Earth.

  9. Scientists believe they have finally uncovered what killed ...

    www.aol.com/news/scientists-believe-finally...

    The study shows that the asteroid, while having a severe initial impact, did not immediately kill off the dinosaurs - instead slowly killing them off over a few years.