Five Minute Geology: Fire n Ice Edition

From out-of-this-world craters to glacial calling cards, we've got some very cool, hot geology!

-- Read more on ScientificAmerican.com

from #AlexandrosSfakianakis via Alexandros G.Sfakianakis on Inoreader http://ift.tt/2CqlfGV
via IFTTT