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
Map and govern seasonal livestock routes so roads, farms, conservation zones, and private enclosures do not trigger conflict or livestock losses.
economics-resources
asia
mongolia
protecting
pastoralist
mobility
corridors
land
fragmentation
livestock
map
govern
seasonal
wildlife
protected
global-unspecified
reserves
reducing
Develop surveillance and quarantine systems that work across informal nurseries, border markets, and online plant commerce where official controls are weak.
economics-resources
informal
plant
preventing
invasive
pest
spread
trade
develop
surveillance
quarantine
settlements
systems
society-governance
technology-computing
without
public
health-biology
Design cooperative, rental, robotic, or service-based machinery systems suitable for farms too small to justify individual equipment ownership.
economics-resources
asia
india
machinery
improving
access
agricultural
fragmented
landholdings
design
cooperative
rental
robotic
systems
society-governance
across
technology-computing
climate-environment
Create practical monitoring, veterinary access, and disease-prevention systems that reduce indiscriminate antimicrobial use in fish and shrimp farming.
health-biology
asia
vietnam
measuring
reducing
antibiotic
aquaculture
create
practical
monitoring
veterinary
access
disease-prevention
systems
society-governance
economics-resources
climate-environment
technology-computing
Build local value chains for millet, sorghum, cassava, bambara groundnut, and other resilient crops that remain economically disadvantaged against imported staples.
climate-environment
africa
malawi
crops
decentralized
processing
climate-resilient
indigenous
build
local
value
chains
millet
resilient
climate
breeding
economics-resources
varieties
Develop restoration models that reduce emissions and fire risk while providing viable incomes for communities dependent on drained peatland agriculture.
economics-resources
asia
indonesia
restoring
degraded
peatlands
harming
local
livelihoods
develop
restoration
models
reduce
communities
social-civic-problems
might
actors
remote
Create cheap, reliable detection and mitigation systems for aflatoxin contamination in maize, groundnuts, and other staples before they enter diets and markets.
economics-resources
africa
tanzania
aflatoxin
detection
affordable
household-level
grain
storage
create
cheap
reliable
mitigation
global-unspecified
whether
systems
philosophy-ethics
early
Develop economically viable integrated pest-management alternatives for small growers who rely on highly toxic chemicals because safer options are inaccessible or ineffective.
economics-resources
africa
kenya
replacing
hazardous
pesticide
informal
vegetable
production
develop
economically
viable
integrated
settlements
local
climate-environment
circular
society-governance
Create traceability systems that can document catch location, species, labor conditions, and gear use for artisanal fishers without requiring expensive onboard technology.
economics-resources
asia
indonesia
verifying
sustainable
fishing
claims
small-scale
fleets
create
traceability
systems
document
society-governance
labor
climate-environment
restoring
fisheries
Design affordable storage, logistics, grading, and processing systems that prevent fruit spoilage between small farms and markets without imposing high capital costs.
economics-resources
asia
philippines
supply-chain
fruit
reducing
post-harvest
losses
tropical
supply
chains
design
affordable
storage
systems
climate-environment
social-civic-problems
society-governance
Develop low-cost ways to map and manage rising soil salinity before farms become economically unviable due to over-irrigation, seawater intrusion, or poor drainage.
economics-resources
asia
pakistan
soil
early
detection
salinization
irrigated
farming
regions
develop
low-cost
ways
climate-environment
health-biology
global-unspecified
haven
health
open
Mexico, North America
Create screening and referral models that use portable imaging, AI validation, and dependable follow-up for people with diabetes outside urban eye-care systems.
local-regional
north-america
mexico
preventing
vision
loss
diabetic
retinopathy
underserved
districts
create
screening
referral
systems
society-governance
health-biology
models
economics-resources
Create clinically sound pathways, tools, and training that reduce years-long delays in diagnosis and treatment for endometriosis where specialist care is scarce.
health-biology
delays
endometriosis
reducing
diagnostic
low-resource
health
systems
create
clinically
sound
global-unspecified
low
whether
society-governance
african
access
open
South Africa, Africa
Design care models that maintain treatment continuity for migrants, truck drivers, seasonal workers, and displaced people who routinely cross administrative boundaries.
health-biology
africa
south-africa
tuberculosis
treatment
workers
improving
adherence
among
mobile
design
care
models
global-unspecified
economics-resources
philosophy-ethics
whether
haven
Build transparent testing, traceability, and regulatory methods for identifying heavy metals, steroids, pharmaceuticals, and contaminants in traditional medicine supply chains.
economics-resources
asia
china
supply-chain
traditional
detecting
toxic
adulterants
herbal
medicines
build
transparent
testing
traceability
supply
society-governance
methods
chains
Develop scalable rehabilitation systems that combine community workers, telemedicine, low-cost devices, and culturally appropriate exercises for stroke survivors far from specialists.
health-biology
asia
india
rehabilitation
stroke
restoring
essential
access
rural
regions
develop
scalable
systems
global-unspecified
economics-resources
remains
african
whether
Create robust low-resource triage systems that recognize early sepsis using inexpensive sensors, clinical workflows, and locally calibrated machine-learning models.
local-regional
africa
uganda
sepsis
reliable
detection
clinics
laboratory
capacity
create
robust
low-resource
triage
systems
society-governance
health-biology
early
referral
open
El Salvador, North America
Determine how heat, dehydration, pesticide exposure, and labor conditions interact to cause chronic kidney disease, then build practical prevention systems for agricultural and construction workers.
health-biology
north-america
el-salvador
kidney
disease
workers
preventing
heat-related
among
outdoor
determine
heat
dehydration
global-unspecified
haven
economics-resources
systems
philosophy-ethics
Develop surveillance and affordable safety protocols for dialysis delivered in fragmented private and informal systems, where contamination and equipment reuse may go undocumented.
society-governance
africa
egypt
informal
dialysis
mapping
unsafe
practices
develop
surveillance
affordable
safety
protocols
systems
settlements
economics-resources
technology-computing
without
Create field-deployable chemical verification methods that pharmacies, regulators, and patients can use to distinguish authentic cancer drugs from counterfeit or degraded products.
health-biology
africa
nigeria
supply-chain
verification
counterfeit
rapid
oncology
medicines
informal
supply
chains
create
field-deployable
global-unspecified
economics-resources
whether
philosophy-ethics