Which of the following laboratory sustainability initiatives has been shown to reduce a research facility's carbon footprint by the largest percentage when implemented?

Sustainability has become a critical focus in scientific research and product development. As laboratories and research facilities work to reduce their environmental impact, various initiatives have emerged to track and minimize carbon footprints. This trivia question tests your knowledge of sustainability trends in scientific research and how the industry is innovating to address environmental concerns.

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Implementing energy-efficient ultra-low temperature freezers (-80°C) instead of conventional models
Switching to digital lab notebooks and paperless documentation systems
Installing motion-sensor lighting throughout research facilities
Adopting reusable glass labware instead of single-use plastic consumables