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
Global / Global / Unspecified
WS01738
Car-centric planning causes gridlock and accidents. Mass transit and safe walking-cycling infrastructure are needed.
Team Humans Club. (2026). Urban transport systems are congested and unsafe.. World Solve Repository, WS01738. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1738
Open
Global / Global / Unspecified
WS01739
High urban housing costs exceed incomes. Affordable housing finance and supply-side interventions can help.
Team Humans Club. (2026). Housing affordability crises push families into precarious living conditions.. World Solve Repository, WS01739. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1739
Open
Global / Global / Unspecified
WS01740
Vehicle and industrial emissions drive smog. Emission standards and clean transport can improve air.
Team Humans Club. (2026). Urban air quality is worsening in many cities.. World Solve Repository, WS01740. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1740
Open
Global / Global / Unspecified
WS01741
Development encroaches on parks and open areas. Urban greening policies and protections are needed.
Team Humans Club. (2026). Public green space is shrinking.. World Solve Repository, WS01741. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1741
Open
Global / Global / Unspecified
WS01742
Floods, earthquakes, and storms hit ill-prepared cities. Risk-sensitive planning and early-warning systems can reduce impacts.
Team Humans Club. (2026). Urban disaster risk management is underdeveloped.. World Solve Repository, WS01742. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1742
Open
Global / Global / Unspecified
WS01743
Residents have little say in planning decisions. Digital participation tools and local councils can improve voice.
Team Humans Club. (2026). Participatory urban governance mechanisms are weak.. World Solve Repository, WS01743. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1743
Open
Global / Global / Unspecified
WS01744
Landfills and dumping persist. Circular waste industries and source separation can help.
Team Humans Club. (2026). Urban waste management systems struggle with volume and recycling.. World Solve Repository, WS01744. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1744
Open
Global / Global / Unspecified
WS01745
Street vendors and informal services go uncounted. Inclusive data collection can inform policy.
Team Humans Club. (2026). Data on informal urban economies is sparse.. World Solve Repository, WS01745. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1745
Open
Global / Global / Unspecified
WS01746
Resource use grows faster than population. Circular economy models can reduce footprints.
Team Humans Club. (2026). Material footprint of consumption keeps rising.. World Solve Repository, WS01746. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1746
Open
Global / Global / Unspecified
WS01747
Single-use plastics overwhelm systems. Bans, alternatives, and recycling can reduce pollution.
Team Humans Club. (2026). Plastic waste management is inadequate.. World Solve Repository, WS01747. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1747
Open
Global / Global / Unspecified
WS01748
Intensive agriculture degrades land and biodiversity. Sustainable farming and diets can mitigate impacts.
Team Humans Club. (2026). Food systems generate both waste and environmental harm.. World Solve Repository, WS01748. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1748
Open
Global / Global / Unspecified
WS01749
Consumers cannot see environmental and social impacts. Traceability systems and reporting standards are needed.
Team Humans Club. (2026). Corporate supply chains lack transparency.. World Solve Repository, WS01749. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1749
Open
Global / Global / Unspecified
WS01750
Choices are driven more by price than impact. Education and labeling can shift behavior.
Team Humans Club. (2026). Consumer awareness of sustainability remains limited.. World Solve Repository, WS01750. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1750
Open
Global / Global / Unspecified
WS01751
Toxic materials contaminate land and water. Stronger regulation and treatment facilities are needed.
Team Humans Club. (2026). Hazardous waste disposal is poorly regulated in some regions.. World Solve Repository, WS01751. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1751
Open
Global / Global / Unspecified
WS01752
Buildings waste energy and materials. Green building standards can improve performance.
Team Humans Club. (2026). Built environment design often ignores resource efficiency.. World Solve Repository, WS01752. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1752
Open
Global / Global / Unspecified
WS01753
Waste from one sector could be inputs for another. Platforms to match by-products with users can enable symbiosis.
Team Humans Club. (2026). Industrial symbiosis opportunities go untapped.. World Solve Repository, WS01753. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1753
Open
Global / Global / Unspecified
WS01754
Standards vary, complicating comparison. Harmonized ESG metrics can help.
Team Humans Club. (2026). Data on corporate sustainability performance is inconsistent.. World Solve Repository, WS01754. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1754
Open
Global / Global / Unspecified
WS01755
Current pledges lead to higher warming. Stronger NDCs and enforcement mechanisms are required.
Team Humans Club. (2026). National emissions reduction commitments remain insufficient for 1.5°C.. World Solve Repository, WS01755. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1755
Open
Global / Global / Unspecified
WS01756
Many climate-vulnerable nations lack resources to adapt. Innovative finance tools and grant mechanisms are needed.
Team Humans Club. (2026). Adaptation finance for vulnerable countries falls short of needs.. World Solve Repository, WS01756. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1756
Open
Global / Global / Unspecified
WS01757
Communities already losing land and livelihoods see little support. Operationalizing loss-and-damage funds is critical.
Team Humans Club. (2026). Loss and damage from climate impacts lack clear compensation mechanisms.. World Solve Repository, WS01757. Retrieved from https://www.worldsolve.org/index.php?view=problem&id=1757
