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The Isthmus of Panama: Out of the Deep Earth

As dates in geologic history go, the formation of the slender land bridge that joins South America and North America is a red-letter one. More than once over the past 100 million years, the two great landmasses ...

dateApr 01, 2014 in Earth Sciences
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Earth's mantle plasticity explained

Earth's mantle is a solid layer that undergoes slow, continuous convective motion. But how do these rocks deform, thus making such motion possible, given that minerals such as olivine (the main constituent ...

dateMar 07, 2014 in Earth Sciences
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Mars rover, slightly used, runs fine

(Phys.org) —When a car gets regular oil changes and care from a good mechanic, keeping it running for 10 years or more isn't exactly an impressive feat of engineering. But then again, such a car isn't an ...

dateFeb 05, 2014 in Space Exploration
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