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31 de jul. de 2019 · Learn about the two leading theories for what killed the dinosaurs 66 million years ago: a giant meteor impact or massive volcanic eruptions. Find out the evidence, the challenges, and the latest research on this scientific mystery.
Learn how an asteroid impact, volcanic eruptions and climate change may have led to the end of the dinosaurs and many other animals 66 million years ago. Explore the evidence and ask our scientists your questions about this dramatic mass extinction.
24 de mar. de 2010 · Learn how scientists discovered the Chicxulub Crater and the iridium layer that suggest a comet, asteroid or meteor hit the earth 65.5 million years ago and killed the dinosaurs. Explore other theories and evidence for the K-T extinction event.
A misconception commonly portrayed in popular books and media is that all the dinosaurs died out at the same time—and apparently quite suddenly—at the end of the Cretaceous Period, 66 million years ago. This is not entirely correct, and not only because birds are a living branch of dinosaurian lineage.
An asteroid the size of a mountain struck near the Yucatán Peninsula 66 million years ago, causing a global catastrophe that killed 75 to 80 percent of life on Earth. The impact triggered fires, tsunamis, earthquakes, and a prolonged twilight that devastated ecosystems and species.
31 de ene. de 2017 · Deccan volcanic eruptions spewed more than a million cubic kilometers (240,000 cubic miles) of molten rock and debris in what is now India. The outpourings started before and ran after the Chicxulub impact. They may have contributed to the mass extinction that ended the reign of the dinosaurs. Mark Richards.
