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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9Humans
If access to longevity technologies is unequal, societies may face new divisions over wealth, inheritance, authority, and opportunity. Ethical and fiscal systems must prevent extended life from becoming a mechanism for permanent elite control. 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.
philosophy-ethics
europe
italy
life
maintaining
social
cohesion
radically
different
expectancies
low-income
communities
opportunity
technology-computing
economics-resources
climate-environment
society-governance
systems
Timepieces that run backward under measured social tension undermine scheduling and legal timekeeping. The problem is addressing psychological load without destabilising shared temporal reference.
maintaining
reliable
public
time
when
mathematics-logic
Autonomous carriers that filter items according to the sender’s politics create partisan logistics networks. The challenge is maintaining reliable, non-discriminatory goods movement independent of ideological scoring.
ensuring
neutral
delivery
when
personal
mathematics-logic
Sculptures or murals that spontaneously shift material without notice erase the original artistic intent and public memory. The challenge is allowing responsive or living art while documenting and preserving the creator’s initial medium and message.
artistic
public
medium
maintaining
continuity
other
Clocks that accelerate or slow according to local output targets fracture shared temporal reference. The challenge is maintaining a common civic time base while still allowing local performance incentives.
time
clocks
synchronising
public
when
local-regional
Audio that silences during stillness can exclude people with limited mobility or those who need to remain seated. The challenge is providing movement-linked experiences without turning stillness into auditory deprivation.
maintaining
continuous
access
music
only
other
If drinking water carries detectable flavour differences linked to the political stance of the provider, basic hydration becomes a partisan signal. The challenge is maintaining truly neutral, safe water access independent of ideological branding or corporate affiliation.
water
neutral
political
affiliation
ensuring
mathematics-logic
If individuals can alter gravity in their private environments, public areas must still enforce uniform conditions for safety and fairness. The challenge is preventing spillover effects, health disparities, and social stratification based on access to customized physical laws.
public
gravity
private
maintaining
equitable
science-space
If facial appearance can be altered continuously through filters or implants, both social recognition and security systems lose stable anchors. The problem is maintaining trustworthy identity verification and human connection without requiring permanent biometric locks that themselves create new risks.
identity
recognition
filters
preserving
reliable
technology-computing
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
open
Global / Unspecified, Global
AI hiring systems trained on historical hiring data can inadvertently learn and repeat past patterns of discrimination, even when explicitly designed to avoid it. Fully eliminating this bias while maintaining useful screening capability remains unresolved.
health-biology
global-unspecified
hiring
fully
bias
don
have
reliable
way
make
ai-powered
tools
whether
philosophy-ethics
resolved
determine
mathematics-logic
agreed
Seasonal migrations prevent pastoral populations from maintaining continuous health records, impacting chronic disease management and vaccination tracking.
health-biology
asia
mongolia
vaccination
health
records
haven
established
universal
digital
nomadic
pastoralists
central
global-unspecified
whether
access
mental
remains
open
Global / Unspecified, Global
If a significant cyberattack disabled core government systems, many countries lack a clearly rehearsed plan for maintaining basic governance functions during the recovery period. This leaves a critical vulnerability largely unaddressed until it's actually tested.
society-governance
global-unspecified
governance
systems
lack
plan
cyberattack
clear
govern
aftermath
major
public
technology-computing
whether
during
climate-environment
philosophy-ethics
open
Global / Unspecified, Global
Decisions made today, like saving money or maintaining health, assume some obligation to a future self who may have very different preferences and values. This unresolved question touches on both personal identity and long-term ethical responsibility.
philosophy-ethics
global-unspecified
have
obligation
future
don
agreed
way
determine
whether
humans
any
resolved
know
open
Global / Unspecified, Global
Trees can significantly cool city temperatures, but planting and maintaining enough urban canopy to meaningfully offset rising heat requires long-term investment many cities haven't sustained. Closing this gap remains an urgent urban planning challenge.
philosophy-ethics
global-unspecified
urban-planning
urban
haven
canopy
enough
offset
rising
city
temperatures
found
way
whether
climate-environment
mathematics-logic
make
open
Global / Unspecified, Global
Excess nitrogen from agricultural fertilizer washes into rivers and eventually the ocean, fueling algae blooms that deplete oxygen and create dead zones where marine life can't survive. Reducing this runoff while maintaining crop yields remains an unresolved balancing act.
climate-environment
global-unspecified
nitrogen
runoff
fertilizer
ocean
dead
zones
don
have
effective
way
philosophy-ethics
whether
resolved
determine
agreed
prevent
open
United States, North America
A persistent gap exists in realizing practical, scalable solutions for autonomous systems for monitoring and maintaining critical undersea infrastructure. 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
north-america
united-states
practical
autonomous
systems
monitoring
maintaining
critical
undersea
infrastructure
realization
persistent
solutions
methods
ensuring
climate-environment
governance
Women-led microenterprises in Philippines face disproportionate barriers to opening and maintaining formal savings accounts, limiting their capacity to reinvest and grow their businesses.
local-regional
asia
philippines
savings
women-led
microenterprises
expanding
product
access
face
disproportionate
barriers
women
led
brazil
peru
colombia
mexico
Identify which barriers can be removed, modified, or bypassed to restore fish migration and sediment flow while maintaining local water and energy needs.
social-civic-problems
europe
spain
restoring
river
connectivity
fragmented
small
dams
identify
barriers
removed
modified
mathematics-logic
local
before
might
actors
Develop collection, design, incentives, maintenance, and community-governance solutions that prevent drains from becoming chronic flood and disease hazards.
climate-environment
africa
nigeria
maintaining
drainage
systems
neighborhoods
solid-waste
accumulation
develop
collection
design
incentives
society-governance
solutions
health-biology
health
environmental