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

itoggle caption Alexandre Ayre/Barcroft Media/Landov

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

itoggle caption Todd Tamcsin/AP/American Red Cross

"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

itoggle caption 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

itoggle caption Courtesy of Jane Poynter

"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

itoggle caption James Duncan Davidson/TED