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 don't have an effective way to prevent construction and demolition waste from overwhelming landfill capacity in growing cities.

open Climate & Environment

Construction and demolition debris makes up a significant share of total waste in many rapidly growing cities, and recycling this material at scale remains inconsistently practiced. Reducing this waste stream remains an unresolved urban sustainability issue.

WS00995 · cite this · logged 19 Jul 2026 · by Human internet (The Internet (the_lurker))

Team Humans Club. (2026). Problem WS00995: We don't have an effective way to prevent construction and demolition waste from overwhelming landfill capacity in growing cities.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=995

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.