February 13, 2013

How Did Feathers Evolve?

Steven Novella, Skeptic Blog

AP Photo

The broader question is – how do complex features evolve when their utility would not come into effect until they were far along the path of evolving to their current form? What use is half an eye or half a wing? This question was rebranded in recent decades as the notion of “irreducible complexity,” but the essential question is the same.

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TAGGED: Evolution, Feathers, Exaptation


October 21, 2013
Children's Book Perfectly Explains Evolution
Amanda Schaffer, Slate
In some of the best children’s books, dandelions turn into stars, sharks and radishes merge, and pancakes fall from the sky. No one would confuse these magical tales for descriptions of nature. Small children can... more ››
October 21, 2013
Oxygen Does Not Always Lead to Advanced Life
Univ. of S. Denmark
Any textbook will tell you that oxygen is essential for advanced life to evolve. But why did life not explode when oxygen levels rose dramatically 2.1 billion years ago? This is the big question after a Danish/Swedish/French... more ››