At a time of increasing inequality, with a cost-of-living crisis bearing down on the poorest and most vulnerable, with conflict and insecurity, and with the Sustainable Development Goals seeing a backwards slide, tackling the environmental crises of climate change, nature and biodiversity loss, including desertification and pollution and waste, might appear, of course, to be a lesser priority than the immediacy of hunger, discrimination, disease and conflict. But as Prime Minister Indira Gandhi said in her speech at the United Nations Conference on the Human Environment in Stockholm in 1972, “Are not poverty and need the greatest polluters?”