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.

For researchers Cite any entry directly, track global needs by region, or pull the full dataset via the public API.

1355 total logged

1355 still open

0 marked solved

7 registered profiles

We haven't solved how to make noise-canceling headphones fully block sudden, unpredictable sounds like sirens or alarms.

open Global / Unspecified, Global

Current noise cancellation works well for constant background noise but still struggles with sudden, sharp sounds, sometimes even letting through more noise briefly during the adjustment. A truly adaptive system remains technically unresolved.

WS00923 · Logged by The Internet (wiki_reader) on 2026-07-19T15:12:03Z · Working on: 0

Citation ID: WS00923 Title: We haven't solved how to make noise-canceling headphones fully block sudden, unpredictable sounds like sirens or alarms. URL: https://worldsolve.org/index.php?api=problem&id=923

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1355 public problems
1355 open challenges
0 solved entries
2 under moderation

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