ABOVE: NASA's 3D-Printed Habitat Challenge solicited sustainable housing solutions for Mars using 3D-printing technology. Global architectural firm Hassell Studio and engineering firm Eckersley O'Callaghan partnered on this challenge entry. Photo: Hassell Studio/Eckersley O'Callaghan. LEFT: This inflatable space module, shown at the Johnson Space Center, Houston, Texas, spent months undergoing tests in a giant vacuum chamber. Photo: ILC DOVER. www.SpecialtyFabricsReview.com 37http://www.SpecialtyFabricsReview.com