The climate emergency alarm is resounding. Tasked with caregiving, healthcare facilities are nonetheless responsible for apparently innumerable greenhouse gas emissions. Predominantly atmospheric pollution causes 9 million deaths a year throughout the world. While legislative measures have been taken to favor change in climate-related business practices, the effects of their implementation are far from visible. On a parallel track, caregivers have been coming together and calling into question their practices, the objective being to institute concrete actions leading to reduction of healthcare-related carbon footprint. Not all of these actions have the same ecological impact or ease of implementation. To demonstrate their effectiveness and set the stage for readjustments, the existing initiatives require qualitative assessment and quantitative appraisal. While they demand personal motivation and professional investment, these efforts have a triple impact, at once ecological, economic and related to quality of life. Multidisciplinary teams come together in the pursuit of a common project epitomizing our missions as caregivers; is not that the essence of our presence in hospital?