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

8 registered profiles

Air quality in several European urban regions remains below WHO standards. This variant focuses on data infrastructure and measurement gaps.

open Europe / Unspecified, Europe

Transport and industrial emissions continue to cause health burdens despite progress. Low-cost sensor networks and policy-impact simulators can guide clean-air strategies.

climate-environment europe europe-unspecified air quality several european urban regions remains below standards variant global-unspecified african data pollution

WS01906 · Logged by Ian Patel on 2026-07-22T15:44:00Z · Working on: 0

Citation ID: WS01906 Title: Air quality in several European urban regions remains below WHO standards. This variant focuses on data infrastructure and measurement gaps. URL: https://www.worldsolve.org/index.php?api=problem&id=1906