Environment & Climate Change

With the rapid growth of electric vehicles in China, their benefits should be scientifically identified to support the industry development. Although the life cycle benefits of electric vehicles have been analyzed worldwide, the recycling phase has not been fully studied yet, especially in China. Therefore, this study focuses on the economic and environmental benefits of electric vehicle recycling in China. Based on the technology adopted by leading enterprises, the gross income and reduction of energy consumption and greenhouse gas emissions are calculated to reveal the benefits.

The Renewable Fuel Standard (RFS) is among the cornerstone policies created to increase U.S. energy independence by using biofuels. Although greenhouse gas emissions have played a role in shaping the RFS, water implications are less understood. We demonstrate a spatial, life cycle approach to estimate water consumption of transportation fuel scenarios, including a comparison to current water withdrawals and drought incidence by state. The water consumption and land footprint of six scenarios are compared to the RFS, including shale oil, coal-to-liquids, shale gas-to-liquids, corn ethanol, and cellulosic ethanol from switchgrass.

Even as the US debates an economy-wide CO2 cap-and-trade policy the transportation sector remains a significant oil security and climate change concern. Transportation alone consumes the majority of the US's imported oil and produces a third of total US Greenhouse-Gas (GHG) emissions. This study examines different sector-specific policy scenarios for reducing GHG emissions and oil consumption in the US transportation sector under economy-wide CO2 prices.

"Without energy, there is no economy. Without climate, there is no environment. Without economy and environment, there is no material well-being, no civil society, no personal or national security. The overriding problem associated with these realities, of course, is that the world has long been getting most of the energy its economies need from fossil fuels whose emissions are imperiling the climate that its environment needs."

"Acting on Time on Energy" conference, held at Harvard on 18–19 September 2008, brought together business leaders, investors, academics and government officials, to discuss energy pollcy for the next U.S. Administration. Click here for photos.

The broad concern of this paper is the study of the process by which environmental and politico-strategic concerns have driven the increase in policy activity related to transportation in the United States, and the identification of the main issues of this highly complex policy debate.

Kelly Sims Gallagher is director of the Kennedy School’s Energy Technology Innovation Policy research group and advises the United States and Chinese governments on a variety of energy issues. 

As the Biofuel industry surges with investments and new entrepreneurial players, Kennedy School scholars are analyzing it working to develop new ways to create carbon-neutral fuels. Madeline Drexler writes on the Kennedy School's input on this emerging new way to lower greenhouse gas emissions and become less dependent on non-renewable energy resources.