How do you become smarter?

For some (birds, at least) it seems the answer is “move higher“. ¬†Researchers at the University of Nevada have studied chickadees on mountains and came to the conclusion that those at higher altitudes – even 600 metres – had larger brains and better spatial recall than those at lower altitudes.

Another reason for those super-cities of the future to be arranged with the high class rulers at the top and the lower classes below perhaps?

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