"The whole aim of practical politics is to keep the populace alarmed (and hence clamorous to be led to safety) by menacing it with an endless series of hobgoblins, all of them imaginary." ~ H.L. Mencken
Birds Might Have a Built-In Head-Up Display Overlaying Navigation Data Onto Their Vision
"It’s long been known that birds have a sense for the Earth’s magnetic field and can use it to aid in navigating their long migratory routes across the continents, but researchers at Oxford University and the National University of Singapore think their innate navigation tools are even cooler than once supposed. A new study shows that birds may actually see that magnetic field. In other words, birds have a natural head-up display akin to that used in fighter jets and other aircraft that overlays information on their fields of vision."
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