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.

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We don't know for certain whether Mars ever hosted, or still hosts, any form of microbial life.

open Global / Unspecified, Global

Evidence suggests Mars once had liquid water, a key ingredient for life, but no mission has yet found conclusive proof of past or present microbes. Answering this remains one of planetary science's biggest open questions.

WS00305 · Logged by The Internet (gray_matter) on 2026-07-20T11:35:00Z · Working on: 0

Citation ID: WS00305 Title: We don't know for certain whether Mars ever hosted, or still hosts, any form of microbial life. URL: https://www.worldsolve.org/index.php?api=problem&id=305

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1355 public problems
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