Volcanism: A Main Character?


That’s the caldera of Santorini Volcano behind this beautiful little poser.

Now put on your hard hats — it’s time for a little chemistry.

Very little.

In fact, just this: “What do you get when you remove the oxygen (chemical symbol O) from H2O?”

Okay, so there’s really no need for special gear (unless you want to follow a working geologist out into the field to collect and study some of the world’s oldest rocks).

You get H2 — hydrogen — of course.

Believe it or not, this answer is closely tied to the origin of life on Earth. So is volcanism: source of the heat energy powering that and other chemical reactions necessary for emerging life.

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