Which sustainability initiative has been most widely adopted by mathematics research institutions to reduce their carbon footprint?

Mathematics and sustainability might seem like unrelated fields, but modern mathematics education and research institutions are increasingly adopting eco-friendly practices. From digital textbooks reducing paper waste to energy-efficient computing for complex calculations, the mathematics community is contributing to global sustainability goals. This poll tests your knowledge about how mathematical organizations are implementing green initiatives while advancing numerical sciences.

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Cloud-based distributed computing for complex calculations, reducing the need for energy-intensive local servers
Mathematics textbooks printed exclusively with algae-based ink on recycled bamboo paper
Solar-powered smart blackboards that capture and digitize written equations automatically
Zero-waste conference policies requiring attendees to bring their own reusable equation tablets