Environment & Climate Change

Plastic pollution in the Arctic marine system is sparsely quantified, and few enforceable policies are in place to ameliorate the issue. In this paper, Dewey and Mackie estimate the flux of plastic through rivers, sea ice, and ocean, and quantify marine plastic pollution from Arctic shipping and fishing. They also examine how a suite of proposed policy interventions would quantitatively change those concentrations.

In May 2023, the Arctic Initiative hosted a workshop in partnership with the Science and Technology Directorate of the U.S. Department of Homeland Security (DHS). The focus was on the challenges posed by the impacts of rapid climate change in Alaska; how DHS and its components— including the Federal Emergency Management Agency (FEMA), the Cyber and Infrastructure Security Agency (CISA), and the U.S. Coast Guard (USCG)—are addressing them; and what possibilities may exist for DHS to do more and better.

Alaska is an important region for the Department of Homeland Security (DHS), given the
Department’s statutory authority and responsibilities. This reality applies with particular force to the U.S. Coast Guard (USCG), with its jurisdiction over fisheries enforcement, drug interdiction, marine safety, oil spill response, search and rescue, and more. This policy brief provides an overview of the challenges facing the USCG in its domains of operation around Alaska—the Arctic Ocean, the North Pacific Ocean, the Bering Sea, the
Chukchi Sea, and the adjacent communities.

This report summarizes a workshop co-hosted by the Arctic Initiative and the Science and Technology Directorate of the U.S. Department of Homeland Security (DHS), focused on the challenges posed by the impacts of rapid climate change in Alaska.

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.

Divestment is a prominent strategy championed by activists to induce positive social change. For example, the current fossil fuel divestment movement includes over 1,500 institutions that control $40 trillion in assets. A primary pathway through which divestment is theorized to be effective is by influencing public beliefs and policy preferences, thus pressuring policymakers to take action. However, prior research only tests this argument via qualitative case studies. The authors assess the impact of exposure to information about fossil fuel divestment on public opinion through the use of national survey experiments in three major greenhouse gas emitters: the U.S., India, and South Africa.

The climate catastrophe is one of the most pressing and consequential challenges of the 21st century. To meet these challenges and maintain global leadership, the United States needs a diverse, nuanced, and data-driven approach to climate resiliency. U.S. foreign policy should prioritize climate diplomacy with an urgency that is comparable to any other U.S. national security interest.

This paper explores the unique conditions that made the Agreement to Prevent Unregulated High Seas Fisheries in the Central Arctic Ocean possible and examines how success was achieved by the interrelationships of science, policy, legal structures, politics, stakeholder collaboration, and diplomacy.

As climate change and economic activity in the region accelerate in the Bering Strait region, the United States and Russia have a common interest in mitigating these shared environmental risks. A November workshop hosted by Harvard Kennedy School’s Arctic Initiative, the Wilson Center’s Polar Institute, and the World Wildlife Fund (WWF) brought together seventeen experts to explore potential actions that the United States and Russia could pursue, jointly or independently, to protect the Bering Strait’s sensitive marine ecosystem and coastal communities. 

The explosion of youth climate activism in recent years has focused the world’s attention on the problem like never before, but Michael Greenstone, the Milton Friedman Distinguished Service Professor of Economics at the University of Chicago, argues that young activists often err by trying to turn climate change into a moral issue rather than an environmental one. Greenstone shared his thoughts during 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