World Solve — A living repository of problems worth solving.

Repository of problems worth solving

World Solve is a public institutional repository for identifying real unresolved problems across science, society, health, governance, economics, and local systems. Each entry is intended to be citable, inspectable, and actionable.

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4194Total

4194Open

0Solved

9Humans

Improving municipal solid waste collection coverage in fast-growing cities of Poland.

open Poland, Europe

Municipal waste collection in rapidly growing cities of Poland fails to reach large portions of the population, resulting in informal dumping and public health risks.

health-biology europe poland public-health municipal waste collection cities improving solid coverage fast-growing rapidly climate-environment growing global-unspecified systems african

WS02586

By Ian Patel · 2025-09-24T03:52:00.000Z · Horizon: 2032

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WS02586 | World Solve | https://www.worldsolve.org/index.php?view=problem&id=2586

Robust methods enabling real-time flood and landslide early warning systems for informal hillside settlements.

open Tanzania, Africa

Current approaches to real-time flood and landslide early warning systems for informal hillside settlements either underperform under variable field conditions or generate externalities that undermine long-term sustainability and equity. Closing the gap requires coordinated advances in science, systems design and enabling institutions.

climate-environment africa tanzania systems enabling real-time flood landslide early warning informal hillside settlements society-governance technology-computing methods economics-resources solutions

WS03180

By Ian Patel · 2025-08-11T02:25:22.830Z · Horizon: 2032

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WS03180 | World Solve | https://www.worldsolve.org/index.php?view=problem&id=3180