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Venus: Proof of active volcanoes—at last
PHYS.ORG   19 March 2023   World  
A perspective view across Maat Mons on Venus, based on Magellan radar data. Credit: NASA/JPL
<p>Venus is almost the same size, mass and density as Earth. So it should be generating heat in its interior (by the decay of radioactive elements) at much the same rate as the Earth does. On Earth, one of the main ways in which this heat leaks out is via ...
Geologists offer new clues to cause of world's greatest extinction
PHYS.ORG   31 July 2017   USA  
Seth Burgess, a geologist at the U.S. Geological Survey, studies a columnar joint in the Siberian Traps. Formed by the cooling of basaltic lava, these massive columns are peppered with orange lichen. Credit: Scott Simper
<p>A study by a researcher in the Syracuse University College of Arts and Sciences offers new clues to what may have triggered the world's most catastrophic extinction, nearly 252 million years ago.<br /><br />James Muirhead, a research associate in the Department ...