TuesdayAug 18, 2026
Quotes: 53419 Authors: 9969
The world of biology is full of miracles, but nothing I have seen is as miraculous as the metamorphosis of the monarch caterpillar. Her brain is a speck of neural tissue a few millimeters long, about a million times smaller than a human brain. With this almost microscopic clump of nerve cells she knows how to manage her new legs and wings, to walk and to fly, to find her way by some unknown means of navigation over thousands of miles from Massachusetts to Mexico. How are her behavior patterns programmed first into the genes of the caterpillar and then translated into the neural pathways of the butterfly? These are mysteries that biologists are far from understanding. The monarch is living proof that nature's imagination is richer than our own.
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