Author: admin
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New Theory Explains Possible Origin of the Armageddon-Causing Object That Killed the Dinosaurs
It forever changed history when it crashed into Earth about 66 million years ago.
The Chicxulub impactor, as it’s known, left behind a crater off the coast of Mexico that spans 93 miles and runs 12 miles deep. Its devastating impact brought the…
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How Rocks Rusted on Earth and Turned Red
How did rocks rust on Earth and turn red? A Rutgers-led study has shed new light on the important phenomenon and will help address questions about the Late Triassic climate more than 200 million years ago, when greenhouse gas levels were high…
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Geologists Produce New Timeline of Earth’s Paleozoic Climate Changes
The temperature of a planet is linked with the diversity of life that it can support. MIT geologists have now reconstructed a timeline of the Earth’s temperature during the early Paleozoic era, between 510 and 440 million years ago — a…
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A Lost Paradise in the Sahara Desert
Large parts of today’s Sahara Desert were green thousands of years ago. Prehistoric engravings of giraffes and crocodiles testify to this, as does a stone-age cave painting in the desert that even shows swimming humans.
However, these…
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Climate Change in Antiquity: Mass Emigration Due to Water Scarcity
The absence of monsoon rains at the source of the Nile was the cause of migrations and the demise of entire settlements in the late Roman province of Egypt.
This demographic development has been compared with environmental data for the first time…
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Mars Crater Offers Window on Temperatures 3.5 Billion Years Ago
Once upon a time, seasons in Gale Crater probably felt something like those in Iceland. But nobody was there to bundle up more than 3 billion years ago.
The ancient Martian crater is the focus of a study by Rice University scientists comparing…
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Researchers Rewind the Clock to Calculate Age & Site of Supernova Blast
Astronomers are winding back the clock on the expanding remains of a nearby, exploded star.
By using NASA’s Hubble Space Telescope, they retraced the speedy shrapnel from the blast to calculate a more accurate estimate of the location and time…
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Understanding Origins of Arizona’s Sunset Crater Eruption 1,000 Years Ago
Around AD 1085 AD, along the southern rim of Northern Arizona’s elevated Colorado Plateau a volcano erupted, forever changing ancient Puebloan fortunes and all nearby life.
Among the 600 or so volcanoes that dot the landscape of the San…
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Major Drought in Middle Ages Could Have Parallels to Climate Change Today
The transition from the Medieval Warm Period to the Little Ice Age was apparently accompanied by severe droughts between 1302 and 1307 in Europe; this preceded the wet and cold phase of the 1310s and the resulting great famine of 1315-21.
In the…
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