It’s that time of the year. The leaves are starting to change colors. This week the National Weather Service in Atlanta shared the satellite image above showing fall foliage changes in the Appalachian ...

Blue sharks possess a secret hidden in their skin: a sophisticated arrangement of microscopic crystals and pigments that create their brilliant blue appearance — and may allow them to change color.

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Evan Fisher first fell in love with the changing colors of fall while looking at an old maple tree in the backyard of his childhood home in North Carolina. A decade later the meteorologist and ...