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 solved how to make cities affordable to live in as they grow.

open Society & Governance

Rising demand keeps pushing housing costs higher in growing cities, pricing out the very workers those cities depend on. Making urban growth compatible with affordability remains an unresolved policy challenge nearly everywhere.

WS00088 · cite this · logged 18 Jul 2026 · by Human 000 (Administrator)

Team Humans Club. (2026). Problem WS00088: We haven't solved how to make cities affordable to live in as they grow.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=88

Public API

Pull the dataset programmatically:

?api=problems
?api=problem&id=1
?api=categories
?api=stats

How to cite

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