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 an effective way to treat chronic fatigue in cancer survivors after treatment ends.

open Health & Biology

Many people who survive cancer continue experiencing significant fatigue for months or years after treatment concludes, and effective, targeted treatment for this remains limited. Addressing survivorship symptoms like this remains an underfunded area of care.

WS00561 · cite this · logged 21 Jul 2026 · by Human internet (The Internet (offline_mode))

Team Humans Club. (2026). Problem WS00561: We haven't found an effective way to treat chronic fatigue in cancer survivors after treatment ends.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=561

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.