You may have read about creatures in fairy tales that resemble humans but are way too big in …
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Tag:
earth
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Although the Earth has long been studied in detail, some fundamental questions have still to be answered. One …
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Scientists have found evidence that the Earth’s inner core oscillates, contradicting previously accepted models that suggested it consistently …
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Environment
Building Blocks of RNA and DNA Could Have Appeared Together Before Life Began on Earth
by Troy Oakesby Troy OakesScientists for the first time have found strong evidence that RNA and DNA could have arisen from the …
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We all at some time or another think about life-changing catastrophes, but have you given much thought to …
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As ice sheets began melting at the end of the last ice age, a series of cataclysmic floods …
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Environment
What the Rise in Oxygen on Early Earth Tells Us About Life on Other Planets
by Troy Oakesby Troy OakesWhen did the Earth reach oxygen levels sufficient to support animal life? The answer to this has implications …
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Environment
Weathering Rocks Hold Clues to Earth’s Great Oxidation Event
by Troy Oakesby Troy OakesAbout 2.4 billion years ago, Earth’s atmosphere underwent what is called the Great Oxidation Event (GOE). Prior to …
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By confirming certain light-scattering dynamics first proposed a half-century ago, University of Nebraska–Lincoln physicists are casting fresh eyes …
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Environment
Do Chemical Leftovers From the Early Earth Sit Near Its Core?
by Troy Oakesby Troy OakesLet’s take a journey into the depths of the Earth, down through the crust and mantle nearly to …