Party On: Legislation passed last week allows the Federal Helium Reserve to continue selling the stockpiled gas. Above, Jonathan Trappe launches his 370-balloon craft from Caribou, Maine, in an attempt to cross the Atlantic Ocean on Sept. 12. Alexandre Ayre/Barcroft Media/Landov hide caption

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A wildfire burns in Prescott, Ariz., on June 18. The fire covered nearly 11 square miles of the Prescott National Forest. Todd Tamcsin/AP/American Red Cross hide caption

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"Bees are vital to the pollination and production of our fruits and vegetables ... unfortunately, they're all in trouble" — Marla Spivak James Duncan Davidson/TED hide caption

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James Duncan Davidson/TED

Aerial view of Biosphere 2, where Jane Poynter lived for two years and 20 minutes. Courtesy of Jane Poynter hide caption

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"In habitats that are pretty much untouched, the sound is organized and structured in such a way so that each critter establishes its own bandwidth" — Bernie Kraus James Duncan Davidson/TED hide caption

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TED Radio Hour

Bernie Krause: How Does Listening To Nature Teach Us About Changing Habitats?

Bernie Krause says you can hear how radically environments change through his recordings of nature.

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