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News & Articles By Virgilio Marin
07/31/2020
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By Virgilio Marin
Research: Strange behavior of Earth’s magnetic field in the South Atlantic believed to be symptoms of an event that repeats every few million years
The Earth is protected from solar wind — a stream of charged particles from the sun — by its geomagnetic field. But this protective barrier is weak in certain areas, particularly south of the Atlantic Ocean. Called the South Atlantic Anomaly (SAA), this area makes it easier for solar wind and other cosmic rays to enter […]
07/31/2020
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By Virgilio Marin
Study: Benign volcanoes may be more explosive than previously thought
A recent study published in the journal Nature Communications found that benign volcanoes that produce basaltic lava flows hide highly explosive magma components. Many volcanoes do not cause life-threatening eruptions even though they release a steady stream of lava. For example, volcanoes in Iceland, Hawaii and the Galapagos Islands consistently emit lava comprised of molten basaltic rock. […]
07/31/2020
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By Virgilio Marin
Extraterrestrial impact may have caused abrupt climate change 12,800 years ago, research suggests
Sediment cores taken from White Pond in South Carolina show that an extraterrestrial collision may have triggered an abrupt change in the Earth’s climate 12,800 years ago, said archaeologist Christopher Moore of the University of South Carolina. About 14,500 years ago, Earth’s climate began to shift from glacial to interglacial, characterized by warmer temperatures. However, partway through this […]
07/30/2020
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By Virgilio Marin
Scientists to investigate mysterious underwater sinkhole off Florida coast
Scientists are gearing up for an expedition deep off Florida’s gulf coast in August. The scientists, with help from the National Oceanic and Atmospheric Administration (NOAA), are looking to probe the Green Banana — a mysterious blue hole that begins 155 feet below the ocean’s surface. Blue holes are underwater sinkholes that form when rainwater dissolves a hole through limestone rock. They are thought to […]
07/30/2020
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By Virgilio Marin
“Snowball Earth” from eons ago may have been caused by a rapid decrease in incoming sunlight, says study
There are at least two instances in which the Earth was completely smothered by ice. This icy world, often called Snowball Earth, is believed to have occurred around 700 million years ago. It was characterized by the global expansion of ice that makes Earth look like a snowball from outer space. Its exact cause remains unknown, although experts posit […]
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