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A light-sensitive protein in the human eye has been shown to act as a "compass" in a magnetic field, when it is present in flies' eyes. The study in Nature Communications showed that without their natural "magnetoreception" protein, the flies did not respond to a magnetic field - but replacing the protein with the human version restored the ability. Despite much controversy, no conclusive evidence exists that...

2011-06-21

 magnet eye human animal navigation migration protein cryptochrome