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05.03.2017, 12:41 - nieeshoes - Rank 6 - 1159 Posts
reader Mark S,
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. wondered if the inability to fly conveyed any advantages to the cormorants,
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.
It appears so, says evolutionary biologist Alejandro Burga of UCLA. The Gal&aacutefunnyagos cormorant may be flightless,
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, but it’s a great diver. “Shorter wings can be advantageous for diving because they decrease bouyancy by decreasing the number of air bubbles trapped in feathers,
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,” Burga wrote in an e-mail. Because the birds are flightless, they can allocate the energy they would use flying for other purposes. “In fact, the Gal&aacutefunnyagos cormorant is larger and heavier than its close relatives. This confers an advantage,” he wrote. With increased oxygen storage they can dive for longer.
Butterfly engineering
Scientists re-created a nanostructure found on green hairstreak butterfly wings,?Emily Conover reported in “Sorting out a butterfly’s bright color,
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, with a twist” (SN: 6/11/16, p. 32),
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. The bioinspired structure can separate polarized light and may be useful for telecommunications.

Settler Surprise


Stone tools discovered in Florida provide evidence that hunter-gatherers inhabited the region at least 1,
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,000 years before the Clovis,
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, once thought to be North America’s earliest settlers,?Bruce Bower reported in “Florida inhabited surprisingly

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