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.

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We can't yet fully prevent the erosion of river deltas that support some of the world's most densely populated regions.

open Global / Unspecified, Global

River deltas provide fertile land for millions of people but are increasingly eroding due to upstream dam construction and rising sea levels reducing natural sediment replenishment. Protecting these critical, densely populated areas remains an unresolved challenge.

WS01023 · Logged by The Internet (the_lurker) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS01023 Title: We can't yet fully prevent the erosion of river deltas that support some of the world's most densely populated regions. URL: https://worldsolve.org/index.php?api=problem&id=1023

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1355 public problems
1355 open challenges
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