Interesting fact #3 about evolution May 12, 2019
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Started by metmike - May 11, 2019, 11:11 p.m.

Some snakes have hipbones, which shows they once had four legs like lizards, their close cousins.

Millions of Years Ago, Snakes Were Hip

Once upon a time, snakes had legs. A new discovery reveals at least one had hips, too.

                      Millions of Years Ago, Snakes Were Hip

By carlberky - May 12, 2019, 8:37 a.m.
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Use 'em or lose 'em. 

By TimNew - May 12, 2019, 9:14 a.m.
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That's profoundly relevant in a discussion of evolution Carl.

By metmike - May 12, 2019, 12:51 p.m.
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Great one carl!

This is not my opinion below but just another article discussing the uncertainty and related to the article that mcfarmer shared with us early last week about an extinct bird re evolving. 

'Use it or lose it' evolution theory in dispute

Biologists say they have found what is quite likely to be the first documented case of "re-evolution", suggesting that nature does indeed offer second chances - a species can evolve a new characteristic, lose it and then regain it.

By carlberky - May 12, 2019, 1:10 p.m.
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"We think that blindness in cavefish is indeed Darwinian, but ultimately this disproves Darwin's original hypothesis of 'disuse'," said Cartwright. In new research, Cartwright explains that eyes are not lost by disuse, but rather, demonstrate Darwin's fundamental theory of natural selection at work -- with blindness selected as favorable and the fittest -- for living in a cave.

"If sighted fish swim towards the light, the only fish that stay in the cave are blind fish. They aren't trying to get to the light anymore because they can't see it. Which actually is a form of selection, and thus, Darwinian evolution in action," said Cartwright.