Poem – “FOUR” CAST (By Ray Gallucci)

  “FOUR” CAST   The earth’s been here four billion years, But humans mere four million. How often has the atmosphere Received a “global killing?”   Have comets many seared the skies, Volcanoes oft erupted? What oceans parched till desert-dry And climates left disrupted?   How many times has planet warmed, Engorged with greenhouse gasses, While glaciers melted and reformed […]

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Plate tectonics thanks to plumes?

“Knowing what a chicken looks like and what all the chickens before it looked like doesn’t help us to understand the egg,” says Taras Gerya. The ETH Professor of Geophysics uses this metaphor to address plate tectonics and the early history of the Earth. The Earth’s lithosphere is divided into several plates that are in constant motion, and today’s geologists […]

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