Populist politics can both enable and endanger climate policy. This comment explores the political economy of populist climate action, emphasizing risks of protectionism and the need to pair domestic industrial strategy with credible pathways for cooperation.

Pandemic-driven mobility shifts illuminate near-term mitigation potential through sustained behavioral change. This comment estimates the scale of emission reductions and offers insights for future climate policy.

At a time when protectionist measures are on the rise, border carbon adjustments could help reduce emissions while limiting protectionist spillovers. This comment in Nature emphasizes pragmatic design choices for environmental effectiveness and compatibility with international trade rules.

A Science policy forum outlining the case for linking climate policies across jurisdictions to enlarge markets, reduce abatement costs, and strengthen collective ambition, while safeguarding environmental integrity and political feasibility.