ENGINEERING & TECHNOLOGYPublished bypaw.princeton.eduHistorical Content•1 min read‘If we really put effort in making this environment more green, more sustainable, we can do it,’ says Xiaohui XuCurrent issueEngineering & TechnologyClass Close-UpOn the CampusStudent LifePrincetoniansPrinceton PortraitLearn moreShareLegalReport