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.

1917 total logged

1917 still open

0 marked solved

8 registered profiles

Urban expansion fragments natural habitats.

open Global / Unspecified, Global

Sprawl cuts off wildlife movement. Green infrastructure and planning can mitigate fragmentation.

climate-environment global-unspecified urban expansion fragments natural habitats sprawl cuts off wildlife movement african cities planning systems informal infrastructure

WS01778 · Logged by Ian Patel on 2026-07-22T14:20:00Z · Working on: 0

Citation ID: WS01778 Title: Urban expansion fragments natural habitats. URL: https://worldsolve.org/index.php?api=problem&id=1778

Log in

Register

Repository Status

1917 public problems
1917 open challenges
0 solved entries
0 under moderation

Filtering Tips

Search by title keyword, country, or theme.
Use category + continent together for better narrowing.
Click any citation code to copy a direct reference format.