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A Rain Forest Begins With Rain, Right? Is This A Trick Question?

Filed by KOSU News in Science.
January 9, 2014

Think of a rain forest — rich with trees, covered by clouds, wet all the time.

Then ask yourself, how did this rain forest get started?

I ask, because the answer is so going to surprise you. It’s not what you think.

Until I saw the video you’re about to see, I just figured that a rain forest starts when a place gets rainier. (Why it gets rainier, I don’t know. I don’t think about that.) And then — once it starts raining all the time — tropical, rain-loving trees start to grow. They grow everywhere, and make a forest.

So I figure that’s the order: rain first, forest second. It’s like the name. We don’t call these places forest-rains; our name for them describes how they came to be.

Or so I thought.

Now watch this — from science explainer and animator Henry Reich:

This isn’t my first “Which came first?” story. I have also tackled the granddaddy of the genre — Chicken versus Egg — and I went with the chicken. Here’s why. [Copyright 2014 NPR]

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