A living repository of problems worth solving.
World Solve is an institutional, citable repository of unsolved and solved problems across science, technology, economics, governance, and philosophy. We give independent researchers and entrepreneurs precise targets to work on next.
1. Explore & Filter
Search and filter across continents, categories, and tags to find precise problems matching your expertise.
2. Claim & Work
Mark problems you are actively working on, collaborate with peers, and build verified solutions.
3. Citable Records
Every problem gets a unique permanent citation ID (e.g. WS00042) for research papers and proposals.
4194Total
4194Open
0Solved
9Humans
Open
South America / Argentina
WS04223
Assess when and how neglected rail lines can be rehabilitated for low-carbon freight, regional development, and resilient transport.
Team Humans Club. (2026). Restoring rail freight corridors abandoned by road competition. World Solve Repository, WS04223. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4223
Open
Asia / Philippines
WS04222
Develop materials, inspection methods, protective coatings, financing, and maintenance plans for roads, ports, bridges, and water systems exposed to salt and humidity.
Team Humans Club. (2026). Preventing corrosion in coastal public infrastructure. World Solve Repository, WS04222. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4222
Open
South America / Brazil
WS04221
Create codes, financing, modular retrofits, and landlord incentives so accessibility is incorporated into ordinary affordable housing, not only specialized projects.
Team Humans Club. (2026). Universal design for low-cost rental housing. World Solve Repository, WS04221. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4221
Open
Africa / Nigeria
WS04220
Develop collection, design, incentives, maintenance, and community-governance solutions that prevent drains from becoming chronic flood and disease hazards.
Team Humans Club. (2026). Maintaining drainage systems in neighborhoods with solid-waste accumulation. World Solve Repository, WS04220. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4220
Open
Asia / India
WS04219
Create alternatives, extraction monitoring, ecological safeguards, and procurement standards to reduce river erosion, coastal damage, and illegal sand mining.
Team Humans Club. (2026). Sustainable sand sourcing for construction booms. World Solve Repository, WS04219. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4219
Open
South America / Peru
WS04218
Develop cost-effective seismic upgrades, risk prioritization, financing, and phased construction plans that preserve educational continuity.
Team Humans Club. (2026). Retrofitting schools for earthquake safety without long closures. World Solve Repository, WS04218. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4218
Open
Asia / India
WS04216
Design location, lighting, maintenance, staffing, payment, reporting, and transport connections that address safety as well as sanitation.
Team Humans Club. (2026). Making public toilets safe and usable for women at night. World Solve Repository, WS04216. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4216
Open
Asia / Nepal
WS04215
Develop sensors, inspections, maintenance prioritization, and community reporting systems for small bridges that fail without warning.
Team Humans Club. (2026). Low-cost bridge monitoring for rural transport networks. World Solve Repository, WS04215. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4215
Open
Africa / South Africa
WS04214
Create safer wiring, metering, enforcement, retrofit financing, and emergency-response approaches in dense settlements with improvised connections.
Team Humans Club. (2026). Preventing fatal fires in informal electrical networks. World Solve Repository, WS04214. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4214
Open
Asia / Turkey
WS04213
Develop affordable inspection tools and retrofit guidance for millions of older homes vulnerable to earthquakes, floods, corrosion, and progressive failure.
Team Humans Club. (2026). Detecting structural defects in aging low-rise housing. World Solve Repository, WS04213. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4213
Open
Asia / India
WS04212
Create systems to track quality, environmental impact, labor conditions, and price integrity for sand, cement, steel, timber, and aggregates.
Team Humans Club. (2026). Transparent sourcing for construction materials in public projects. World Solve Repository, WS04212. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4212
Open
South America / Brazil
WS04211
Develop interoperable shipping, customs, trucking, terminal, and warehousing information systems that work across public and private actors.
Team Humans Club. (2026). Reducing port congestion caused by fragmented data systems. World Solve Repository, WS04211. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4211
Open
Africa / Kenya
WS04210
Build verification systems that detect double counting, non-additional projects, coerced land deals, and misleading claims across carbon markets.
Team Humans Club. (2026). Preventing fraud in carbon-credit supply chains. World Solve Repository, WS04210. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4210
Open
Asia / India
WS04209
Develop fair insurance, road safety, earnings stability, algorithmic transparency, and worker representation for app-mediated delivery riders.
Team Humans Club. (2026). Improving safety in informal motorcycle delivery economies. World Solve Repository, WS04209. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4209
Open
South America / Argentina
WS04208
Reduce dependence on a few suppliers for laboratory reagents, test consumables, and enzymes during epidemics and trade disruptions.
Team Humans Club. (2026). Building resilient supply chains for diagnostic reagents. World Solve Repository, WS04208. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4208
Open
Africa / Ghana
WS04207
Create traceability and enforcement systems that stop unusable textile waste from being labeled as reusable goods and exported to vulnerable communities.
Team Humans Club. (2026). Preventing waste dumping through opaque textile-export channels. World Solve Repository, WS04207. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4207
Open
Asia / Indonesia
WS04206
Develop practical alternatives to diesel for small trucks, boats, and last-mile vehicles serving dispersed rural communities.
Team Humans Club. (2026). Decarbonizing low-volume rural freight transport. World Solve Repository, WS04206. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4206
Open
Global / Global
WS04205
Create forecasting, procurement, quality assurance, and manufacturing-resilience systems that prevent shortages caused by concentrated global supply.
Team Humans Club. (2026). Managing shortages of essential generic medicines. World Solve Repository, WS04205. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4205
Open
Africa / Kenya
WS04204
Develop right-to-repair standards and business models for agricultural machinery, medical devices, appliances, and electronics in markets dependent on imports.
Team Humans Club. (2026). Making repair manuals and spare parts available for essential devices. World Solve Repository, WS04204. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4204
Open
Asia / Taiwan
WS04203
Create credible monitoring, worker communication, port controls, and grievance channels for crews operating far from legal oversight.
Team Humans Club. (2026). Reducing forced labor risks in distant-water fishing fleets. World Solve Repository, WS04203. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=4203
