Climate change is an increasingly apparent global reality. According to the new United Nations (New York, New York) Intergovernmental Panel on Climate Change report, published on August 9, 2021, the scientific consensus is that there is still time to act, but immediate action is required and “demands strong and sustained reduction in carbon dioxide and other greenhouse gases.” Although fossil fuel burning is still the major source of greenhouse gas emissions, each sector can take action to reduce its share of emissions, including indirect emissions that occur in the supply chain. A series of studies over the past half decade have revealed that the global environmental footprint of health care is significant; its contribution to total global greenhouse gas emissions (in carbon dioxide equivalents) is nearly 5%.2,3  These studies make it clear...

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