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
Vegetation that bioluminesces beneath people carrying financial obligations creates public signalling of private economic status. The challenge is keeping urban biology free of involuntary debt disclosure.
debt
preventing
sidewalk
moss
glowing
economics-resources
Works that visibly deteriorate according to how often they are ignored accelerate cultural loss. The problem is supporting art maintenance without turning public attention into a survival requirement for cultural objects.
public
art
preserving
real
time
other
Precipitation patterns that form public text from collective search data turn weather into a surveillance display. The problem is keeping atmospheric phenomena free of involuntary information disclosure.
preventing
rain
spelling
previous
day
other
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
Surfaces that subtly incline walkers toward certain shops convert public right-of-way into directed marketing infrastructure. The problem is keeping pedestrian geometry neutral and safe rather than commercially steered.
toward
preventing
sidewalks
tilting
pedestrians
mathematics-logic
Seating that begins charging once a sitter’s mind wanders turns rest and reflection into billable activities. The problem is keeping public rest surfaces free for unstructured thought.
public
preventing
benches
metering
daydreaming
other
Individualised audio environments inside shared lifts can isolate passengers and prevent common situational awareness. The problem is balancing personal comfort with the need for collective auditory cues in confined public spaces.
shared
preserving
elevator
experience
when
science-space
Silhouettes that lengthen or shorten according to predicted lifespan turn private health data into ambient visual information. The challenge is protecting individuals from involuntary longevity signalling in everyday environments.
signalling
preventing
shadows
publicly
remaining
climate-environment
Dispensers that release water only after correct answers create barriers for children, visitors, and people with cognitive differences. The problem is providing free hydration without knowledge tests as gatekeepers.
water
answers
ensuring
access
when
other
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
Treating quiet as a scarce, metered resource excludes those who cannot afford or schedule loans. The challenge is preserving library silence as a public good rather than a rationed commodity.
silence
expanding
free
access
when
health-biology
Regulatory systems that license strong emotional odours can suppress natural human signalling and create enforcement disparities. The problem is managing genuine public nuisance without policing private affective states through smell.
emotional
protecting
expression
when
personal
other
Infrastructure maintenance that fills gaps with glowing commercial messages turns every walk into an ad exposure. The challenge is funding public repairs without converting the pavement itself into continuous commercial real estate.
repairs
removing
micro
advertisements
embedded
health-biology
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
If parks close at night on the grounds that vegetation requires solitude, human access to green space is reduced. The problem is integrating genuine ecological rest requirements with the continuous human need for outdoor refuge and recreation.
access
balancing
public
park
claimed
science-space
public transport systems inaccessible to disabled people remains one of the most urgent challenges of our time. Systems currently in place are inadequate for the scale and complexity of the problem. A successful approach must work where resources are scarcest and demonstrate clear, measurable results. It should identify possible harms, respect local agency, and show how the solution can be maintained and expanded by the communities it is meant to serve.
systems
public
transport
inaccessible
disabled
other
Local referenda that temporarily outlaw certain emotions create zones of enforced affective conformity. The problem is preserving the right to private and public emotional expression while still allowing communities to address genuine collective harms.
emotional
protecting
freedom
when
neighbourhoods
society-governance
Seating that morphs to deter anyone except previous users reduces spontaneous social contact and excludes newcomers. The problem is designing street furniture that remains welcoming while still managing wear and anti-social behaviour.
preventing
public
benches
discouraging
strangers
health-biology
Pavements that adjust temperature beneath each walker can create comfort for some and exclusion or health risk for others. The challenge is ensuring that personalised thermal control does not become a new form of public-space discrimination.
equalising
sidewalk
micro
climates
heat
climate-environment
Biological data repositories growing in public or private trees raise questions of ownership, access, and longevity. The problem is ensuring that information rooted in living organisms remains under the control of the original subject and does not become harvestable by third parties.
data
living
trees
securing
personal
mathematics-logic