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 haven't solved how to prevent the weight regain that follows most successful weight loss efforts.

open Global / Unspecified, Global

Even when people successfully lose significant weight, the body's biology often works to regain it over time, undermining long-term success. Understanding and countering this biological pushback remains a major open challenge.

WS00510 · Logged by The Internet (citizen_of_earth) on 2026-07-21T11:30:00Z · Working on: 0

Citation ID: WS00510 Title: We haven't solved how to prevent the weight regain that follows most successful weight loss efforts. URL: https://worldsolve.org/index.php?api=problem&id=510

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1355 public problems
1355 open challenges
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