Around the world in recent years, the enthusiastic embrace of globalization has given way to a backlash against liberalized trade. Since the start of the coronavirus pandemic, that shift toward a generalized closure, both between and within nations, has become almost a default setting, on display in everything from governments’ rush to close borders in response to new variants to hyperpartisan politics that turns policy debates into trench warfare. Meanwhile, the pandemic, combined with climate change, has only created added urgency among younger generations to ensure that questions of intergenerational equity are made central to how we address both crises. […]