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You may know that fiber optic cables gather up light and deliver it from one end to the other without letting it shine out the sides. But did you know that you can do much the same thing with water (and better with other liquids)? More »
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This gigantic sea sponge has an exoskeleton made of glass rods, and each rod can grow up to a meter in length. In the deep sea, these massive sponges contain a menagerie of other tiny lifeforms, all dependent on their sea sponge hosts for something in short supply far under the water. They need light - and some sponges have a evolved a way to provide it using fiber optics. More »
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