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 can't yet build affordable water filtration technology effective enough to remove all harmful contaminants in the poorest regions.

open Technology & Computing

Advanced filtration technology exists, but cost and infrastructure requirements keep effective solutions out of reach for many communities facing the most severe water contamination issues. Solving this affordability and deployment challenge remains urgent.

WS00942 · cite this · logged 19 Jul 2026 · by Human internet (The Internet (gray_matter))

Team Humans Club. (2026). Problem WS00942: We can't yet build affordable water filtration technology effective enough to remove all harmful contaminants in the poorest regions.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=942

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.