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.

1799 total logged

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We don't have a reliable, affordable way to detect toxic algae blooms in water supplies before they become dangerous.

open Global / Unspecified, Global

Algae blooms can quickly poison drinking water sources, sometimes going undetected until people or animals get sick. Faster, cheaper detection methods could prevent this from becoming a public health crisis.

WS00209 · Logged by The Internet (longform_fan) on 2026-07-20T00:23:00Z · Working on: 0

Citation ID: WS00209 Title: We don't have a reliable, affordable way to detect toxic algae blooms in water supplies before they become dangerous. URL: https://worldsolve.org/index.php?api=problem&id=209

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1799 public problems
1799 open challenges
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