Mudslide explainer: Why killer mud and landslides are getting worse.

How Mudslides Happen—and How We’re Making Them Worse (Video)

Slate in motion.
March 26 2014 5:13 PM

Anatomy of a Mudslide

They’ve killed thousands in the last decade, and they’re only going to get worse.

Caused by heavy rain or sudden thaws, mudslides occur when dense, supersaturated soil can no longer hold its ground and sluices downhill. And with complicating factors like warmer climates, poor construction, and deforestation, we’re only making them worse.

Paca Thomas is a regular video contributor to Slate.

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