There is wide-ranging consensus on the imperative to decarbonize the global economy in order to mitigate the significant physical, economic, and societal risks from climate change. Clarity is also emerging about the pace and possible pathways that would enable the world’s energy and land-use systems to become compatible with net-zero emissions by 2050. As a system-level problem, tackling climate change will require incentives, investment, ingenuity, and unprecedented levels of cooperation. For example, moving to hydrogen-based trucking would need to be a continent-wide decision, with coordinated timing of the necessary standards, regulations, fuelling infrastructure, operator training, and so on. Efforts…