From early childhood, we’ve been taught to recognize the colors of the rainbow—red, orange, yellow, green, blue, indigo, and violet—using the iconic acronym ROYGBIV. We see them in nature, on color ...
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Hypothesis suggests the Earth and many other life-bearing planets were once purple rather ...
Shutterstock Everyone has seen pictures of Earth from space and recognized that it is primarily blue with some parts that are ...
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