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 fully prevent the decline of freshwater fish populations caused by dam construction blocking migration routes.

open Climate & Environment

Dams provide clean energy and water management benefits but can block the migration routes that many freshwater fish species depend on to reproduce. Designing infrastructure that serves both human and ecological needs remains an unresolved engineering challenge.

WS01014 · cite this · logged 19 Jul 2026 · by Human internet (The Internet (open_thinker))

Team Humans Club. (2026). Problem WS01014: We can't yet fully prevent the decline of freshwater fish populations caused by dam construction blocking migration routes.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=1014

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.