Which sustainability initiative has been proven to reduce a typical research laboratory's carbon footprint by up to 50% when fully implemented?

Test your knowledge about cutting-edge sustainability initiatives in scientific research and development! Many laboratories and scientific organizations are transforming their operations to reduce environmental impact while advancing scientific discovery. This poll explores innovative approaches to sustainability in scientific research settings - from waste reduction techniques to renewable energy integration in laboratory environments. How well do you know the latest green science practices?

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Ultra-low temperature freezer optimization (raising temperatures from -80°C to -70°C where possible)
Converting all printed journals to digital-only formats
Implementing motion-activated lighting throughout laboratory spaces
Transitioning to biodegradable plastic laboratory consumables