Reports & Papers

This paper focuses on the deep decarbonization of the transportation sector. The first part of the paper provides an assessment of China’s efforts to stimulate the rapid deployment of electric vehicles. The second part analyzes the CO₂ equivalent reductions from a 20% electric vehicle deployment scenario. It concludes that under most assumptions, emissions will be reduced, but the total reduction will be less than many people believe due to the carbon intensity of battery manufacturing.

Nuclear security around the world has improved dramatically over the last three decades—which demonstrates that with focused leadership, major progress is possible. But important weaknesses remain, and the evolution of the threat remains unpredictable. The danger that terrorists could get and use a nuclear bomb, or sabotage a major nuclear facility, or spread dangerous radioactive material in a “dirty bomb,” remains too high. The United States and countries around the world need to join together and provide the leadership and resources needed to put global nuclear security on a sustained path of continuous improvement, in the never-ending search for excellence in performance.

This essay examines Russia’s growing role in Asia’s energy markets, assesses the implications for the U.S., and examines the claim that closer Sino-Russian energy ties are adding new incentives for a broader strategic alignment.

The Belfer Center’s Environment and Natural Resources Program and the Center for Science, Technology, and Education Policy at Tsinghua University held the fifth annual Tsinghua-Harvard Workshop on Low-Carbon Development and Public Policy. This event brought together leading experts on climate and energy from academic, business, and government communities in both the United States and China. This year’s workshop focused on electricity systems and renewable energy penetration.

Electric vehicles (EVs) have advanced significantly this decade, owing in part to decreasing battery costs. Yet EVs remain more costly than gasoline fueled vehicles over their useful life. This paper analyzes the additional advances that will be needed, if electric vehicles are to significantly penetrate the passenger vehicle fleet.

The Harvard-Tsinghua Workshop on Low-Carbon Development and Public Policy is the fourth annual joint workshop between the Harvard Kennedy School’s Environment and Natural Resources Program and the Center for Science, Technology, and Education Policy at Tsinghua University. The workshop convened leading experts on climate and energy from the United States and China at Tsinghua University in Beijing, China, on June 1-2, 2017.

The workshop was divided into five sessions. The first two sessions focused on the scope of the climate problem and the options for addressing it. The following three sessions explored specific options: renewable energy, nuclear power, and air pollution regulation.

Cooperation between U.S. and Russian nuclear scientists and engineers represents an important opportunity for rebuilding U.S.-Russian relations. The United States and Russia possess more than 90 percent of the world’s nuclear weapons, the world’s largest stocks of weapons-usable nuclear material, and the world’s largest nuclear complexes, giving them a special responsibility for nuclear security and preventing nuclear terrorism.

In this Project on Managing the Atom Discussion Paper, Philipp C. Bleek chronicles nuclear weapons proliferation choices throughout the nuclear age. Since the late 1930s and early 1940s, some thirty-one countries are known to have at least explored the possibility of establishing a nuclear weapons program. Seventeen of those countries launched weapons programs, and ten acquired deliverable nuclear weapons.