Science, Technology, and Public Policy

Al-Juaied and Whitmore examine the costs and prospects for direct air carbon capture and storage (DACCS), and identify types of funding needed for early deployment for DACCS and building momentum for later widespread deployment. The challenges of implementing DACCS at very large scale further emphasize the need for urgent and widespread action to reduce emissions, which should continue to be the main priority for meeting climate goals.

Joel Clement characterizes the growing greenhouse-gas emissions from the commercial shipping industry as well as the efforts of the United Nations body, the International Maritime Organization, to reduce these emissions as unacceptable.

The Icelandic Ministry for Foreign Affairs recently published an extensive report with a detailed analysis on the current relationship between Greenland and Iceland with 99 recommendations on how to strengthen their co-operation. Halla Hrund Logadóttir moderated the discussion.

If Joe Biden defeats Donald Trump in November, the question he will face is not whether to restore the liberal international order. It is whether the United States can work with an inner core of allies to promote democracy and human rights while cooperating with a broader set of states to manage the rules-based international institutions needed to face transnational threats.

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.

The COVID-19 recovery response from the UK government should include increased and well-targeted R&D investments to foster the energy transition and a more sustainable economy.

The authors recount the history of ARPA-E and describe how it has supported clean energy innovation in the United States. They argue that ARPA-E needs two things in the short term in order to increase its chances of success in the long term: resources and a leader who can channel the country's top science and engineering talent toward particularly tough technical challenges.