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
Workers assemble solar panels at the now-bankrupt Suntech in the eastern Chinese city of Wuxi. Overproduction in the country has helped lower the cost of solar panels.
Peter Parks /AFP/Getty Images
University of Maryland's Jaydev Desai shows off a prototype of a robot that he and colleagues are developing to minimize harm to patients during brain surgery.
John T. Consoli/University of Maryland