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 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.

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.

Richard Revesz, the Lawrence King Professor of Law at New York University and co-founder of the Institute for Policy Integrity, shared his thoughts on how the transition to a new presidential administration later this month will impact U.S. environmental and climate change policy in the latest episode of “Environmental Insights: Discussions on Policy and Practice from the Harvard Environmental Economics Program,” a podcast produced by the Harvard Environmental Economics Program.

Stephen Walt looks back at the Trump administration as four years of big ambitions, a handful of successes—and many more failures. He concludes that it was more than a missed opportunity because Trump's blunders have left the United States in much worse shape than when he took office. 

The Republican Party's willingness to indulge U.S. President Donald Trump's dangerous fantasies reveals a blithe disregard for U.S. foreign policy and national security, Stephen Walt writes.

Climate@HKSis a new online resource for navigating the full range of climate-related activity across Harvard Kennedy School's research centers, degree programs, and administrative departments.

The geopolitical and geo-economic forces wrought by the coronavirus pandemic, as examined previously in this series, are likely to slow the transition to a more sustainable global energy mix. Fortunately, the pandemic has also resulted in governments gaining vastly greater influence over whether this shift stalls or accelerates.

For most people, there was nothing to celebrate when the International Monetary Fund downgraded its outlook for global economic growth in June, anticipating a contraction of 4.9% for 2020. Yet for others, such as the small but persistent group of economists and others known as the “degrowth movement,” the Covid-induced economic slowdown has a silver lining.