#00001Reduce household waste
Every year, millions of tons of waste end up in landfills. We need innovative solutions to reduce household waste and promote recycling.
Sarah Chen
Joined June 12, 2025
1 issue submitted:
2 solutions proposed:
#00020Low-cost ceramic water filters for households
Distribute locally-manufactured ceramic pot filters that cost under $10 and last 2-3 years. These filters remove 99.9% of bacteria and are already used successfully across Southeast Asia and Central America. Pair with a community education program on maintenance.
#00026Modular prefab construction to cut building costs
Factory-built modular housing units can be produced 30-50% faster and 10-20% cheaper than traditional construction. Units are built in controlled environments (no weather delays), transported to site, and assembled in days. Companies like Factory OS and Katerra have demonstrated this at scale.