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Dealing with Dinosaurs Gave Mammals Night Vision

When dinosaurs ruled the earth, life was tough for our mammalian ancestors. So they learned to hunker down during the day and venture out only in the relative safety of night. Scientists believe that this caused a sudden shift in the construction of their eyes from color vision to light detection. In other words, dinosaurs caused mammals to develop night vision. Mammalian eyes are different than those of amphibians, birds and fish because they are dominated by rods. Rods act like a...

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