Maelstrom

This is the way the world ends:

A nuclear strike on a deep sea vent. The target was an ancient microbe—voracious enough to drive the whole biosphere to extinction—and a handful of amphibious humans called rifters who'd inadvertently released it from three billion years of solitary confinement.

The resulting tsunami killed millions. It's not as through there was a choice: saving the world excuses almost any degree of collateral damage.

Unless, of course, you miss the target.

Now North America's ...