There is an ability in some animals that allows them to use an invisible force as a guide. It’s called magnetoreception and it relies on the Earth’s magnetic field. Animals like salamanders, frogs, and migratory birds use this mechanism to gain an added sense of direction. For years scientists wondered how exactly this was done, considering that the geomagnetic field is so weak. Now, they have identified the mechanism in birds and, impressively, it involves their eyes. What’s even more interesting is that Scientist Joe Kirschvink at California Institute of Technology has been looking for a
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