Our children’s children

Climate change is prevention’s biggest challenge—its effects on health and well-being will be wide-ranging, long-term, and global. The pressures and opportunities for action are growing as the risks and hazards become clearer, greater, and nearer. Mitigation—cutting greenhouse gas (GHG) emissions (primary prevention)—benefits health, economy, environment, and society through agriculture, transport, air quality, energy supply, and waste management. Adaptation (secondary prevention) is the essential back-up when mitigation fails; there are strong incentives for local adaptation to counter predictable local threats such as extreme urban temperatures, flooding, and water scarcity. Carbon taxes are a powerful but underexploited mechanism for reducing greenhouse gas emissions, so need to be reinforced by other incentives, including subsidies for wind, solar, hydrogen, and hydropower. Now more than ever, the pressure for transformative action on climate change has the potential to stimulate sudden and rapid movement towards clean energy sources and technologies.