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.

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We can't yet build rockets that are fully reusable without expensive refurbishment between flights.

open United States, North America

Reusable rockets have cut costs, but they still require significant repair and inspection after each landing. True rapid reusability, like an airplane, would make space travel dramatically cheaper.

science-space north-america united-states rockets reusable yet build fully expensive refurbishment between flights have global-unspecified whether possible mathematics-logic technology-computing

WS00158 · Logged by The Internet (field_notes) on 2026-07-19T18:26:00Z · Working on: 0

Citation ID: WS00158 Title: We can't yet build rockets that are fully reusable without expensive refurbishment between flights. URL: https://www.worldsolve.org/index.php?api=problem&id=158