Science & Technology

Direct air capture (DAC) is a type of technology that captures carbon dioxide directly from the air. As the negative impacts of climate change become ever more apparent, governments and private industries have funneled increasing support toward DAC as a critical pathway toward achieving a net-zero future. Although a promising technology, wide-scale deployment of DAC faces several significant challenges.

Joseph Nye writes: From an American perspective, it is just as dangerous to underestimate Chinese power as it is to overestimate it. While hysteria creates fear, discounting China's recent progress and future ambitions could lead the United States to squander its own long-term advantages.

Joseph Nye writes that even at this early stage, there are at least eight lessons— some old, some new— that the world is learning (or relearning) from the war in Ukraine.

Will China succeed in what some call its grand strategy of displacing American power? Whichever scenario emerges also depends on the strategy the US chooses in response, rites Joseph Nye.

Harvard Kennedy School’s Belfer Center for Science and International Affairs today announced the appointment of Lori Garver and Beth Sanner as non-resident Senior Fellows. Garver is a former Deputy Administrator of the National Aeronautics and Space Agency (NASA) and current CEO of Earthrise Alliance. Sanner was Deputy Director of National Intelligence for Mission Integration and is now Professor of Practice at the University of Maryland's Applied Research Lab for Intelligence Security. They will both share their experience and expertise with students and faculty of Harvard Kennedy School and the greater Harvard community.      

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.

Joseph Nye writes that although the United States has long commanded the technological cutting edge, China is mounting a credible challenge in key areas. But, ultimately, the balance of power will be decided not by technological development but by diplomacy and strategic choices, both at home and abroad.

In the wake of a series of damaging cyber intrusions on private businesses controlling critical pieces of U.S. infrastructure, Harvard Kennedy School Senior Lecturer Juliette Kayyem says that countering the growing threat will require erasing the "legal fiction" that cyberattacks are different than physical attacks on American civilians.

The fuel crisis the Colonial Pipeline shutdown has caused underscores the serious, real-world consequences that bargain has for Americans. As the Biden administration begins to implement its national cybersecurity strategy, it must take steps to address Russia’s strategic negligence toward cybercrime.

This study provides a whole-systems simulation on how to halve global CO2 emissions by 2050, compared to 2010, with an emphasis on technologies and costs, in order to avoid a dangerous increase in the global mean surface temperature by end the of this century.