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 do not have a comprehensive model explaining the periodic reversal of the Sun's magnetic field every 11 years.

open Global / Unspecified, Global

The solar magnetic dynamo flip drives the solar activity cycle, but we cannot accurately predict cycle strength decades in advance. High-resolution solar interior magnetohydrodynamic models are required.

magnetic solar comprehensive model explaining climate-environment

WS02158 · Logged by Ian Patel on 2026-07-22T08:00:00Z · Horizon: 2030 · Working on: 0

Citation ID: WS02158 Title: We do not have a comprehensive model explaining the periodic reversal of the Sun's magnetic field every 11 years. URL: https://worldsolve.org/index.php?api=problem&id=2158

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2165 public problems
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