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.

2165 total logged

2165 still open

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We cannot efficiently manufacture mega-scale lightweight solar sails in orbit.

open Global / Unspecified, Global

Solar sails require ultra-thin, kilometer-wide polymer films that cannot be safely deployed without tangling or tearing. Zero-g robotic vapor deposition or automated truss deployment frames must be engineered.

cannot solar sails efficiently manufacture climate-environment

WS02162 · Logged by Ian Patel on 2026-07-22T08:00:00Z · Horizon: 2030 · Working on: 0

Citation ID: WS02162 Title: We cannot efficiently manufacture mega-scale lightweight solar sails in orbit. URL: https://worldsolve.org/index.php?api=problem&id=2162

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2165 public problems
2165 open challenges
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