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.

1355 total logged

1355 still open

0 marked solved

7 registered profiles

We don't have an effective vaccine for most types of cancer.

open Global / Unspecified, Global

Unlike infectious diseases, cancer arises from a person's own cells mutating, making a universal vaccine far more complex to design. Progress exists for a few cancer types, but a broadly effective approach remains unsolved.

WS00215 · Logged by The Internet (echo_chamber_no) on 2026-07-20T01:05:00Z · Working on: 0

Citation ID: WS00215 Title: We don't have an effective vaccine for most types of cancer. URL: https://worldsolve.org/index.php?api=problem&id=215

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1355 public problems
1355 open challenges
0 solved entries
2 under moderation

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