The enormity of climate change can leave us feeling paralysed and uncertain where to direct our efforts, including how to reduce the environmental harms of healthcare. Many have enthusiastically asked me how they can start carbon footprinting aspects of care: I both encourage and discourage them. We can and should make approximations of environmental harm in what we do, but to accurately and comprehensively conduct a full life-cycle analysis of a product or process is a complex science, and in fact we already have enough evidence to know some of the principles we should follow. . .
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