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
Removing debris may require technologies capable of approaching, manipulating, or disabling other spacecraft. The challenge is creating verification and trust mechanisms so debris removal does not become covert anti-satellite capability. The solution must work with limited capital, intermittent services, and local maintenance capacity. The research opportunity is to define measurable success criteria, test the approach in realistic settings, identify failure modes, and create a pathway from prototype to accountable deployment.
science-space
debris
removal
technologies
space
dual-use
low-income
communities
removing
may
require
technology-computing
economics-resources
climate-environment
society-governance
systems
quantum
infrastructure
Infants may receive temporary cognitive or motor skill packages that expire after a trial window, creating pressure to purchase permanent versions. The challenge is ensuring that basic developmental capacities remain freely available and that commercial skill layers do not become gatekeepers of opportunity.
skill
designing
fair
systems
children
health-biology
Interactive reconstructions of dead relatives may demand ongoing inclusion in gatherings, decisions, and emotional life. The problem is setting boundaries that respect both the living family’s autonomy and any residual rights or wishes of the deceased without forcing perpetual digital presence.
digital
deceased
family
life
managing
technology-computing
When people rent out unused cognitive capacity during daydreaming, buyers may leave behind persistent mental traces. The problem is creating clean separation between leased neural resources and the host’s own cognition so that temporary economic use does not produce lasting psychological or identity effects.
preventing
residual
thought
contamination
rented
economics-resources
Residences that rearrange themselves overnight according to algorithmic mood forecasts may increase comfort for some while creating disorientation, loss of control, or surveillance concerns for others. The challenge is balancing adaptive environments with resident agency, privacy, and predictability.
rearrange
governing
homes
autonomously
furniture
technology-computing
If sleep becomes a tradable commodity sold in discrete blocks, the poorest citizens may be forced into permanent light or irregular cycles. The challenge is designing access systems that treat restorative sleep as a basic need rather than a market good, while still allowing voluntary exchange for those who choose it.
sleep
blocks
addressing
inequality
when
economics-resources
Rapid language change driven by neural interfaces may make ordinary conversation between grandparents and grandchildren impossible without permanent translation layers. The problem is preserving mutual understanding and cultural continuity without forcing everyone onto the same implant standard or erasing linguistic diversity.
language
neural
maintaining
intergenerational
communication
health-biology
States and institutions may need registries of deployed AI models, their data sources, risk levels, and accountability owners. The challenge is building disclosure rules that support safety without exposing legitimate security or privacy risks. This becomes particularly difficult during fiscal austerity, because public institutions must remain fair, resilient, and accountable while adapting to new risks.
society-governance
asia
bangladesh
registries
during
fiscal
austerity
governance
public-interest
model
institutions
risks
states
public
climate-environment
systems
across
When local weather can be bought in advance, wealthier areas may secure preferred conditions while poorer ones experience residual or adverse patterns. The challenge is creating equitable allocation mechanisms for atmospheric resources that do not deepen existing social divides or disrupt larger climate systems.
climate
weather
preventing
micro
inequality
climate-environment
Objects may gain short-lived conversational personalities that interact with and sometimes argue with their owners. The problem is preventing psychological dependence, harassment by objects, or commercial manipulation while still allowing useful interactive features. Solutions should include clear off-switches, personality boundaries, and accountability for manufacturers.
objects
personalities
regulating
temporary
assigned
mathematics-logic
Future systems may allow designated family members to rewind and revise recorded life timelines after a person dies. The challenge is balancing grief, legacy, and historical accuracy while preventing revisionism that harms living people or erases inconvenient truths. Solutions must define clear consent rules, audit trails, and limits on alteration.
governing
posthumous
personal
timeline
editing
health-biology
States and institutions may need registries of deployed AI models, their data sources, risk levels, and accountability owners. The challenge is building disclosure rules that support safety without exposing legitimate security or privacy risks. This becomes particularly difficult under climate migration pressure, because public institutions must remain fair, resilient, and accountable while adapting to new risks.
society-governance
asia
philippines
registries
under
climate
migration
pressure
governance
public-interest
model
institutions
risks
public
climate-environment
systems
Cities may deploy scent systems that automatically adjust collective emotional states. Over time some residents develop tolerance or adverse reactions, creating uneven effects and new forms of environmental inequality. The problem is designing transparent, opt-outable, and medically safe atmospheric interventions that do not become tools of coercion or social control.
scent
managing
public
emitters
alter
health-biology
Future technologies may allow external parties to alter or insert content into shared dream environments while people sleep. The problem is establishing consent, ownership, and integrity boundaries for experiences that occur outside waking awareness. Any solution must define measurable harms, protect privacy without eliminating beneficial dream-sharing uses, and function across different neural interface standards.
dream
shared
protecting
spaces
unauthorized
science-space
Astronomy, cultural practices, wildlife, and human sleep may be affected by large satellite fleets. A workable solution must reconcile connectivity goals with brightness limits, orbital design, and international compliance. The solution must work with limited capital, intermittent services, and local maintenance capacity. The research opportunity is to define measurable success criteria, test the approach in realistic settings, identify failure modes, and create a pathway from prototype to accountable deployment.
science-space
satellite
preserving
dark
skies
during
expansion
low-income
communities
solution
technology-computing
economics-resources
climate-environment
society-governance
systems
quantum
infrastructure
safe
open
United States, North America
Autonomous spacecraft may make split-second avoidance decisions using imperfect data and proprietary software. The unresolved problem is assigning responsibility, proving fault, and compensating affected parties across jurisdictions. The design must remain functional when standards, trade routes, data access, and diplomatic cooperation are unreliable. The research opportunity is to define measurable success criteria, test the approach in realistic settings, identify failure modes, and create a pathway from prototype to accountable deployment.
technology-computing
north-america
united-states
autonomous
spacecraft
liability
collisions
under
geopolitical
fragmentation
data
may
make
economics-resources
climate-environment
society-governance
systems
infrastructure
Autonomous spacecraft may make split-second avoidance decisions using imperfect data and proprietary software. The unresolved problem is assigning responsibility, proving fault, and compensating affected parties across jurisdictions. The solution must work with limited capital, intermittent services, and local maintenance capacity. The research opportunity is to define measurable success criteria, test the approach in realistic settings, identify failure modes, and create a pathway from prototype to accountable deployment.
technology-computing
autonomous
spacecraft
liability
collisions
low-income
communities
may
make
split-second
avoidance
economics-resources
climate-environment
society-governance
systems
quantum
infrastructure
science-space
open
United States, North America
Thousands of satellites may provide connectivity while increasing collision risk, radio interference, light pollution, and disposal complexity. The challenge is creating enforceable coordination and end-of-life standards across commercial and state operators. The solution must work with limited capital, intermittent services, and local maintenance capacity. The research opportunity is to define measurable success criteria, test the approach in realistic settings, identify failure modes, and create a pathway from prototype to accountable deployment.
climate-environment
north-america
united-states
managing
orbital
congestion
mega-constellations
low-income
communities
thousands
satellites
may
provide
technology-computing
economics-resources
society-governance
systems
quantum
As more government activity moves online, corruption may shift from visible cash handling to invisible data manipulation, access control, and procurement capture. The challenge is detecting abuse in systems that look efficient on the surface. This becomes particularly difficult in informal settlements, because public institutions must remain fair, resilient, and accountable while adapting to new risks.
society-governance
resilient
systems
informal
settlements
creating
anti-corruption
digital
states
government
activity
public
technology-computing
institutions
across
corruption
open
Brazil, South America
Research environments may unintentionally create or amplify resistance traits that escape through waste, personnel, or supply chains. Robust solutions must combine laboratory engineering, surveillance, waste treatment, and international reporting. The solution must work with limited capital, intermittent services, and local maintenance capacity. The research opportunity is to define measurable success criteria, test the approach in realistic settings, identify failure modes, and create a pathway from prototype to accountable deployment.
economics-resources
south-america
brazil
supply-chain
resistance
controlling
antimicrobial
synthetic
biology
laboratories
low-income
communities
research
create
technology-computing
climate-environment
society-governance
systems