Science & Technology

Joseph Nye argues that prudence results from the fear of creating unintended consequences in unpredictable systems and can develop into a norm of nonuse or limited use of certain weapons or a norm of limiting targets. Something like this happened with nuclear weapons when the superpowers came close to the brink of nuclear war in 1962, during the Cuban missile crisis. The Limited Test Ban Treaty followed a year later.

Professors David Keith and Joseph Aldy and their co-authors say deeper social science research could contribute to policy decisions on this tool to address climate change.

David Keith argues that either or both carbon removal or solar geoengineering  is needed to cool the planet this century. There are no other options.

Daniel Schrag argues that in order to reestablish the United States as a serious partner in addressing global climate change, the president must make good on the original standards of the Paris Agreement.

 The Gazette spoke with John Holdren, Teresa and John Heinz Professor of Environmental Policy at the Harvard Kennedy School and professor of environmental science and policy in the Department of Earth and Planetary Sciences, about what the incoming Biden-Harris administration reinstalling science as a foundation for government policy means.

John P. Holdren, science advisor to the Obama administration, lists 6 things he thinks Joe Biden would do on climate change.

David Keith writes that the risks of solar geoengineering cannot be sensibly evaluated without a scenario for goals and governance as with other technologies.

Joseph Nye writes that the world is increasingly obsessed with the ongoing power struggle between the United States and China. But the technology-driven shift of power away from states to transnational actors and global forces brings a new and unfamiliar complexity to global affairs.

The authors argue that more determined efforts to globalize renewable energy transmission can confer significantly higher economic and environmental benefits from renewables on billions of people. This can be done by exploiting spatial differences between electricity loads and net renewable generation across time zones (temporal arbitrage) and latitude (seasonal arbitrage). Using very long distance, ultra-high voltage (UHV) transmission infrastructure, temporal and spatial arbitrage can move low-cost clean electricity from areas with excess capacity to high demand zones in other countries and even continents.

In this episode of Resources Radio, host Daniel Raimi talks with David Keith, a physics and public policy professor at Harvard University and one of the world's leading experts on solar geoengineering. Keith outlines prominent examples of solar geoengineering technologies in development—from ambitious ideas, such as sending aerosols to the stratosphere, to more operational solutions, like painting roofs white to reflect more sunlight into space. An advocate for research on solar geoengineering, Keith discusses how coalitions among like-minded nations and clearer guidance from policymakers could expand deployment of promising technologies.