A MORE HOSPITABLE CLIMATE — The University of California San Diego is switching its anesthesia delivery system from leaky pipes to tanks and canisters. It's no laughing matter: Nitrous oxide is an extremely potent greenhouse gas that can linger in the atmosphere for 114 years. Hospitals around the country are taking steps to be more sustainable, Joanne Kenen reports: Medical centers in Vermont and Boston are growing vegetables in rooftop gardens; Seattle Children’s Hospital is planting conifers in greenery-starved low-income neighborhoods. To save water in drought-prone Los Angeles, a UCLA plastic surgeon suggested timers for operating room sinks. The health care sector and its supply chain are responsible for 8.5 percent of U.S. emissions of greenhouse gases including carbon dioxide, methane and ozone — an outsized impact compared with the rest of the world. (Globally, health care systems contribute roughly 4.6 percent of total greenhouse gas emissions.) “When you really dig into it, we find that we are typically the biggest energy user, the biggest water user and the biggest waste producer in a community,” said Barbara Hamilton, UC San Diego's health sustainability officer. The Biden administration is corralling hospitals' sustainability efforts through the Department of Health and Human Services. About 116 health organizations representing 872 hospitals have signed onto its climate pledge, which combined with the federal health systems covers about 15 percent of U.S. hospitals. The pledge is voluntary, but hospital sustainability experts insist it’s not the usual feel-good exercise. Signatories commit to specific actions and must publicly report progress toward cutting emissions by 50 percent by 2030 and cutting net emissions by 100 percent by 2050. “It’s been a catalyst,” said Sarah Brockhaus, the sustainability programs manager of UCLA Health. There’s also a trickle-down effect in terms of knowledge and experience, she said, for smaller hospitals and those with fewer resources than a place like UCLA. Lots is happening, but it's unclear whether any of it will be enough. Chisara Ehiemere, a leading researcher at NYU Stern Center on Sustainable Business, says the early adopters are on their way, but the pandemic has stalled broader efforts. For health systems that didn't start pre-pandemic and now are dealing with nursing shortages and slim margins, the data will need to show clear return on investment for green initiatives. “It’s really hard sometimes for hospitals to make the business case for doing this," she said.
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