Around 13,000 years ago, three things happened at once: (1) Global temperature suddenly stopped rising and plunged back to ice age-frigidity. (2) The Western Hemisphere’s largest mammals, including the horse, camel, woolly mammoth, saber-toothed cat, and dozens more, went extinct. And (3) the uniquely beautiful stonework of the early American Clovis people disappeared from the archeological record. For the past half-century, scientists have struggled to explain the three events. Were they independent of each other, or could they have had a common cause? Then in 2007, researchers reported finding minuscule ET melt droplets and nanodiamonds at the geologic layer that records the three events, evidence, they said, that the common cause was the impact of a giant comet. Opposition to the impact hypothesis was swift and severe, as opponents reported that they could not replicate the evidence and decried the hypothesis as pseudoscience, no better than UFOs, perpetual energy, and cold fusion. Yet over the last decade, scientists have replicated the original evidence and uncovered a wealth of new supporting data. One eminent geologist describes the hypothesis as possibly "the most important in the Earth Sciences since plate tectonics." In language accessible to non-scientists, Deadly Voyager tells the story of how an extraterrestrial event many thousands of years ago changed earth and human history — and how a scientific claim can be thoroughly rejected, only to re-emerge strengthened.
✔ Author(s): James Lawrence Powell
✔ Title: Deadly Voyager: The Ancient Comet Strike that Changed Earth and Human History
✔ Rating : 4.4 out of 5 base on (277 reviews)
✔ ISBN-10: 0578666774
✔ Language: English
✔ Format ebook: PDF, EPUB, Kindle, Audio, HTML and MOBI
✔ Device compatibles: Android, iOS, PC and Amazon Kindle
Readers' opinions about Deadly Voyager by James Lawrence Powell
Alannah Moore
Follow the thrilling adventures of an unlikely hero in a world full of danger and intrigue. The author's fast-paced writing and imaginative plot keep you on the edge of your seat. Each character is well-developed, adding depth to the exciting narrative. The twists and turns make for a rollercoaster of emotions. It's an exhilarating read that captures the essence of adventure. Perfect for fans of action-packed stories.
Poppy Brooks
Discover the hidden stories behind famous works of art in this fascinating book. The author's detailed research and engaging writing bring each piece to life. Each chapter uncovers new insights into the artists' lives and creative processes. The narrative is both informative and captivating, offering a new perspective on familiar artworks. It's a must-read for art lovers and history buffs alike. Perfect for those who appreciate the stories behind the art.
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