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.
Publicly citable
Every problem has a stable citation code for reference and discussion.
Filtered by relevance
Search by category, geography, status, and keywords.
Builder-oriented
Use the repository to find startup ideas, policy leads, and research agendas.
4194Total
4194Open
0Solved
9Humans
The absence of robust, context-adapted solutions for sensor networks and models for predicting urban flood risk at street-level resolution creates cascading risks across interconnected human and natural systems. Key missing elements include durable performance, low lifetime cost, and governance arrangements capable of sustaining impact beyond pilot stages.
society-governance
asia
kazakhstan
sensor
networks
models
predicting
urban
flood
risk
street-level
resolution
integrated
solutions
systems
climate-environment
robust
governance
open
South Africa, Africa
A large share of primary school students in South Africa cannot read a simple sentence by the expected grade level, reflecting gaps in teacher training and curriculum pacing rather than school attendance alone.
social-civic-problems
africa
south-africa
gaps
primary
students
south
closing
foundational
literacy
among
school
global-unspecified
mathematics-logic
Current approaches to nature-based coastal protection that remains effective under high rates of sea-level rise 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.
society-governance
europe
france
under
nature-based
coastal
protection
remains
effective
high
rates
sea-level
rise
systems
climate-environment
enabling
solutions
designs
A persistent gap exists in realizing practical, scalable solutions for mangrove designs accelerating accretion under rapid sea-level rise. Scientific understanding, engineering readiness and institutional capacity remain insufficient to translate promising concepts into durable impact under real-world constraints of cost, skills and governance.
society-governance
africa
nigeria
under
mangrove
designs
accelerating
accretion
rapid
sea-level
rise
breakthrough
approaches
solutions
systems
methods
scalable
institutional
The absence of robust, context-adapted solutions for adaptive living shorelines keeping pace with accelerating sea-level rise creates cascading risks across interconnected human and natural systems. Key missing elements include durable performance, low lifetime cost, and governance arrangements capable of sustaining impact beyond pilot stages.
society-governance
africa
kenya
adaptive
living
shorelines
keeping
pace
accelerating
sea-level
rise
breakthrough
approaches
solutions
systems
climate-environment
robust
methods
