More on that fine-tuned parameter for Earth’s plate tectonics

Here's a follow up on the Plate Tectonics article a few days ago. I was going to post this yesterday, but Kepler-452b (being 60% bigger than the Earth) go in the way :)

Otis, who first alerted me to the original article, comments on this also (see below)

Why we live on Earth and not Venus

http://www.sciencedaily.com/releases/2015/07/150721193957.htm 

 

Compared to its celestial neighbors Venus and Mars, Earth is a pretty habitable place. So how did we get so lucky? A new study sheds light on the improbable evolutionary path that enabled Earth to sustain life.
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The first article did not explain why the amount of radioactive material was less than expected.  This article does.

This information identifies an example of "environmental fine-tuning."   As more is learned about the Earth, planetary formation, stars, climate, etc., more cases of environmental fine-tuning are continually being found.

 

Otis