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Originally Posted by nitrum
I'll actually defend the article here for just a minute.
True the magnetic field thing was just plain retarded. And also the geology statement was really misinformed. But the Earths geology is actually quite unique. The author of the article doesn't know shit about science, but he had the right idea.
Earth does have a really active geology. If it wasn't for the convection and radioactive decay in the Earths mantle we wouldn't have plate tectonics. And without plate tectonics all dry land would have eventually eroded into the oceans. We'd be entirely covered in 2 miles of water.
But the thing about the crust melting is totally rediculous. Also underground water definitely isn't necessary for life.
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Earths geology is quite impressive from a galactic point of view, but honestly it all depends on planetary mass. The other planets in our solar system once had geologic activity too, but their mass was so low that they died off billions of years ago