We note that the current intellectual, social, and economic milieu has led to general acceptance of environmental sustainability as one of the most important issues of our time. Environmental sustainability is a "big idea," and it is "in the air" (Gladwell, 2008). Few industrial-organizational (I-O) psychologists disagree. However, there are many different ideas on the what, where, and how our field can contribute. We review facilitators, drivers, and barriers to environmental sustainability of organizations. We also discuss the ways in which cultural and international research can strengthen sustainability research and practice. In order to make a meaningful difference and positive environmental impact, I-O psychologists and HR practitioners need to focus on their unique skills and influence organizational environmental sustainability by designing and shaping work, workplaces, and workforces.