Choosing Congestion Pricing Policy: Cordon Tolls versus Link-Based Tolls

In Focus — Oct 21, 2025

In Focus: The Future of US Biofuels

This video with RFF Fellow Nafisa Lohawala shares insights about the future of US biofuels.

Issue Brief — Oct 7, 2025

The Strategic Game of Rare Earths: Why China May Only Be in Favor of Temporary Export Restrictions

This brief explores the implications of China’s export controls on rare earth elements and future policymaking through the lens of game theory.

Media Highlight — Oct 6, 2025

E&E News: “Sustainable Aviation Fuel Offers Lifeline to Ethanol, Researchers Say”

This piece discusses the findings of a new paper about sustainable aviation fuel, which was coauthored by RFF Fellow Kristen McCormack.

Report — Sep 25, 2025

Corporate Due Diligence, Auto Industry, and Battery Supply Chains

This report suggests that the European Union’s Corporate Sustainability Due Diligence Directive is a useful framework for harmonizing existing national-level regulations on the corporate due diligence of critical mineral supply chains.