In the bayous of Louisiana, costumed revelers beg for food and money from their neighbors, to support a communal gumbo.

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"Forget about your job, your worries,  your bills.."

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The roots of Mardi Gras run deeper than Christianity.

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Headphones on! Picture being under a palm tree next to a burbling brook in the middle of California's Anza-Borrego desert.

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Scientists are finding ways to help plants absorb fertilizers and nutrients more efficiently.

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Keeping rare birds home on the range.

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Up close with one of the rarest bird populations in North America. 

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When the weather's been cold and the Hudson River freezes over, that's when ice boats may be sailing on the river.

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Australia is home to about one tenth of the world's living bird species. Here's a sampling of a few of them - headphones on!

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Headphones on for a sound portrait of a cloud forest.

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