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 builders Skip the search for a problem worth your time. Browse a vetted, growing list and start where the gap is real.

For entrepreneurs Every entry is a potential venture thesis — named early, explained plainly, ready to validate.

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

open Global / Unspecified, Global

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 · Logged by The Internet (the_lurker) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00995 Title: We don't have an effective way to prevent construction and demolition waste from overwhelming landfill capacity in growing cities. URL: https://worldsolve.org/index.php?api=problem&id=995

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1355 public problems
1355 open challenges
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