Howard Maunus, MD - Fellow, Climate Health Organizing Fellowship, Cambridge Alliance and Harvard Medical School; Member, Carolina Advocates for Climate, Health, and Equity
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Dr. Howard Maness, a retired gastroenterologist and former faculty member at Jefferson Medical College, shares his journey from clinical practice to leading sustainability initiatives in healthcare. After realizing the environmental toll of medical waste during his 30-year career performing over 10,000 endoscopies, he became deeply involved in healthcare sustainability. He joined the Climate Health Organizing Fellowship at Harvard Medical School and Cambridge Health Alliance, where he helped pilot sustainability certification efforts across multiple surgery centers. Dr. Maness emphasizes that healthcare contributes about 8.5% of U.S. greenhouse gas emissions and highlights actionable, low-cost solutions such as switching to LED lighting, upgrading aging HVAC systems with state incentives, eliminating unnecessary central nitrous oxide delivery systems, and extending the use of medical supply bottles beyond arbitrary 24-hour discard rules. He advocates for local action as a way to combat climate despair, stressing that individual and institutional changes can yield both environmental and financial benefits. He also offers encouragement to healthcare professionals seeking meaningful post-career transitions, urging them to find community through organizations like Carolina Advocates for Climate, Health, and Equity, Practice Green Health, and Health Care Without Harm. The episode concludes with Dr. Maness inviting listeners to join the ongoing effort to develop a voluntary sustainability certification for ambulatory surgery centers, currently in collaboration with ACHC, the Joint Commission, Quad A, AAAHC, and DNV. His message is one of empowerment: even small, practical changes in healthcare operations can create significant environmental and economic impact. He underscores the importance of collective action, networking, and institutional innovation in building a more sustainable healthcare system.
Healthcare is responsible for 8.5% of U.S. greenhouse gas emissions—making it a critical sector for climate action.
Simple, low-cost interventions like LED lighting and HVAC upgrades can yield ROI in under 18 months and are often supported by state incentives.
Eliminating central nitrous oxide delivery in ORs is a high-impact, low-effort change, as it's rarely used and has 273x the global warming potential of CO2.
Extending the use of medical supply bottles beyond arbitrary 24-hour discard rules can prevent thousands of unnecessary disposals annually.
Retired or transitioning healthcare professionals can find purpose and impact by joining sustainability-focused communities and initiatives.
…and 3 more takeaways available in PodZeus
Introduction and Background of Dr. Howard Maness
Scott Becker introduces Dr. Howard Maness, a retired gastroenterologist and recent graduate of the Climate Health Organizing Fellowship at Harvard Medical School and Cambridge Health Alliance. Dr. Maness shares his clinical background and initial awareness of healthcare’s environmental impact.
The Turning Point: From Clinical Practice to Sustainability Advocacy
Dr. Maness reflects on how performing over 10,000 endoscopies revealed the massive waste generated by single-use devices, prompting him to shift focus toward healthcare sustainability and climate advocacy.
Overcoming Climate Despair: Local Action as a Path to Impact
“I don't know if I can make a difference globally, so I'll make a difference locally.”
Practical Solutions in Surgery Centers: Lighting, HVAC, and Nitrous Oxide
“Nitrous oxide is a terrible agent, has a global warming potential 273 times that of CO2, destroys the ozone layer.”
Reducing Waste in Medical Supply Use: The Case of Eyedrop Bottles
“There's no accreditation organization that says you have to discard bottles after 24 hours. That's just an internal rule that they have.”
“Nitrous oxide is a terrible agent, has a global warming potential 273 times that of CO2, destroys the ozone layer.”
“I don't know if I can make a difference globally, so I'll make a difference locally.”
“There's no accreditation organization that says you have to discard bottles after 24 hours. That's just an internal rule that they have.”
Host
Guest
Howard Maness, MD
person
Scott Becker
person
Climate Health Organizing Fellowship
organization
Becker's Healthcare Podcast
media
Harvard Medical School
organization
Cambridge Health Alliance
organization
Jefferson Medical College
organization
Carolina Advocates for Climate, Health, and Equity
organization
Ophthalmology Center in Fairlawn, New Jersey
other
KCI Institute in Portland
other
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