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

0 marked solved

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We haven't solved how to prevent the long-term health effects of air pollution in densely populated cities.

open Global / Unspecified, Global

Air pollution contributes to respiratory and cardiovascular disease in millions of people living in polluted urban areas, and treatment only addresses symptoms, not exposure. Reducing the exposure itself remains the harder, unresolved half of the problem.

health-biology global-unspecified air-pollution air pollution haven solved prevent long-term health effects densely populated whether philosophy-ethics mathematics-logic climate-environment way

WS00326 · Logged by The Internet (offline_mode) on 2026-07-20T14:02:00Z · Working on: 0

Citation ID: WS00326 Title: We haven't solved how to prevent the long-term health effects of air pollution in densely populated cities. URL: https://www.worldsolve.org/index.php?api=problem&id=326