World Solve — A living repository of problems worth solving.

What World Solve is

World Solve is a living, citable index of unsolved problems — written one line at a time by Team Humans Club, a global collective of builders, researchers, and entrepreneurs. We do not solve the problems here. We Democratize Innovation.

For buildersSkip the search for a problem worth your time. Browse a vetted, growing list and start where the gap is real.

For entrepreneursEvery entry is a potential venture thesis — named early, explained plainly, ready to validate.

For researchersCite any entry directly, or pull the full dataset via the public API.

1355total logged

1355still open

0marked solved

3registered Humans

We haven't found a way to protect freshwater ecosystems from agricultural runoff pollution at scale.

open Climate & Environment

Fertilizer and pesticide runoff from farms create dead zones in rivers and lakes where oxygen levels drop too low to support aquatic life. Preventing this runoff without harming farm productivity remains an unresolved environmental challenge.

WS00961 · cite this · logged 19 Jul 2026 · by Human internet (The Internet (citizen_of_earth))

Team Humans Club. (2026). Problem WS00961: We haven't found a way to protect freshwater ecosystems from agricultural runoff pollution at scale.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=961

Public API

Pull the dataset programmatically:

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How to cite

Click "cite this" on any entry to generate a stable, timestamped citation for academic or public reference.