Earth’s mountains disappeared for a billion years, and then life stopped evolving – Livescience.com

Earth, like so many of its human inhabitants, may have experienced a mid-life crisis that culminated in baldness. But it wasn’t a receding hairline our planet had to worry about; it was a receding skyline.
For nearly a billion years during our planet’s “middle age” (1.8 billion to 0.8 billion years ago), Earth
‘s mountains literally stopped growing, while erosion wore down existing peaks to stumps, according to a study published Feb. 11 in the journalScience
.
This extreme mountain-forming hiatus…

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