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 lack a unified explanation of high-energy cosmic rays above the knee.

open Global / Unspecified, Global

Ultra-high-energy cosmic rays’ origins remain unclear, challenging acceleration models. Distributed detector arrays and multi-messenger astronomy could identify sources.

science-space global-unspecified cosmic rays lack unified explanation high-energy above knee ultra-high-energy origins high remain energy exact know explain

WS01823 · Logged by Ian Patel on 2026-07-22T15:14:00Z · Working on: 0

Citation ID: WS01823 Title: We lack a unified explanation of high-energy cosmic rays above the knee. URL: https://www.worldsolve.org/index.php?api=problem&id=1823

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2165 public problems
2165 open challenges
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