2.4M views · 13K reactions | Among living things, the color blue is oddly rare. Blue rocks, blue sky, blue water, sure. But blue animals? They are few and far between. In this video, we'll look at some very cool butterflies with Bob Robbins, Ph.D. from Smithsonian's National Museum of Natural History to help us learn how living things make blue, and why this beautiful hue is so rare in nature. | Be Smart • PBS | Facebook
8:06
FacebookBe Smart • PBS
2.4M views · 13K reactions | Among living things, the color blue is oddly rare. Blue rocks, blue sky, blue water, sure. But blue animals? They are few and far between. In this video,
Be Smart • PBS. . Among living things, the color blue is oddly rare. Blue rocks, blue sky, blue water, sure. But blue animals? They are few and far between. In this video, we'll look at some very cool butterflies with Bob Robbins, Ph.D. from Smithsonian's National Museum of Natural History to help us learn how living things make blue, and why ...
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