In Petrochemical Planet Alice Mah examines the changing nature of the petrochemical industry as it faces the existential threats of climate change and environmental activism. Drawing on research from high-level industry meetings, petrochemical plant tours, and polluted communities, Mah juxtaposes the petrochemical industry's destructive corporate worldviews with environmental justice struggles in the United States, China, and Europe. She argues that amid intensifying public pressures, a profound planetary industrial transformation is underway that is challenging the reigning age of plastics and fossil fuels. This challenge comes from what Mah calls multiscalar activism-a form of collective resistance that spans local, regional, national, and planetary sites and scales and addresses the interconnected issues of environmental justice, climate, pollution, health, extraction, land rights, workers' rights, systemic racism, and toxic colonialism. Reflecting on the obstacles and openings for critical interventions in the petrochemical industry, Mah offers important insights into the possibilities for resistance and for developing alternatives to the reliance on fossil fuels.