The looming dangers of climate change have attracted considerable attention from the scientific community in recent years. Researchers from widely diverse backgrounds have begun to examine the causes and potential effects of climate change from biological, economic, and countless other perspectives. The debate on climate change has also shifted considerably in recent years. While disagreement about the existence of climate change was much more common several decades ago, most established contemporary scientists agree about its existence today (“Fifth Assessment Report Technical Summary,” 2014). Furthermore, the idea that climate change is non-existent is widely considered to be a complete denial of reality, as the current debate in the scientific world focuses on the severity of the consequences. The scientific community has also reached a consensus that current human activity is unsustainable, although the timing of the most dire and irreversible effects varies. If anything, the shift to the sustainability debate has raised many more questions, not to mention the many different definitions of sustainability. . Natural scientists now debate the location of “ecological limits” while social scientists debate the feasibility of making necessary changes to human behavior through existing social institutions. One such debate is taking place in the context of transportation, where participants focus on the question of how to meet humanity's mobility needs while reducing greenhouse gases and other emissions. There are many different perspectives in this discussion, from broader perspectives on the need for transportation as a whole, to more focused perspectives on potential transportation combinations... middle of paper..." Car Culture and Global Environmental Policy. " Review of InternationalStudies 26.2 (2000): 253-70. JSTOR. Network. April 22, 2014. Penna, Caetano Cr and Frank W. Geels. “Multidimensional Struggles to Green Industry: A Life Cycle Model with Dialectical Issues and a Case Study.” Technology Forecasting and Social Change 79.6 (2012): 999-1020. Web.Román, Tomás Gómez San, Ilan Momber, Michel Rivier Abbad and Álvaro Sánchez Miralles."Regulatory framework and business models for plug-in electric vehicle charging: infrastructure, agents and commercial relationships." Energy Policy 39.10 (2011): 6360-375. Web. Shrivastava, Paul. “Sustainable Transportation Strategies: China.” Greener ManagementInternational 50 (n.d.): 53-63. Web.Turrentine, Thomas S. and Kenneth S. Kurani. “Car Buyers and Fuel Economy?” Energy Policy 35.2 (2007): 1213-223. Net.