Evolution Seen in Worm Eyes

Darwin himself struggled to explain the evolution of so intricate an organ as the human eye. But scientists have discovered a worm's eye that may make the job easier.

Charles Darwin regarded explaining that natural selection could produce such an intricate organ as the human eye as one of the biggest challenges to his theory. "Now, a team of American and European researchers report that they have discovered an eye that could represent the first step in this evolution. They have found, in effect, a swimming eyeball." "It is possible...that in the course of evolution, our own eyes started out as swimming eyeballs. Only later did the job of catching light get relegated to only some cells, which could send signals to their neighbors. And only much later did these specialist cells relay signals to brains."

Car culture and suburban sprawl create rifts in society, claims study

New research links urban planning and political polarization.

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Politics & Current Affairs
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How to split the USA into two countries: Red and Blue

Progressive America would be half as big, but twice as populated as its conservative twin.

Image: Dicken Schrader
Strange Maps
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  • Perhaps the best way to stop the infighting is to go for a divorce and give the two nations a country each
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NASA astronomer Michelle Thaller on ​the multiple dimensions of space and human sexuality

Science and the squishiness of the human mind. The joys of wearing whatever the hell you want, and so much more.

Flickr / 13winds
Think Again Podcasts
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