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
open
Global / Unspecified, Global
Current radioisotope thermoelectric generators rely on scarce Pu-238, limiting mission frequency and payload capacity. Developing miniaturized, high-efficiency nuclear or alternative power sources is vital for continuous outer-planet exploration.
science-space
global-unspecified
power
sources
lack
autonomous
long-life
deep-space
missions
beyond
solar
reach
climate-environment
small
businesses
african
open
Global / Unspecified, Global
Long-duration missions to Mars risk irreversible DNA damage, cognitive decline, and cancer in astronauts. Lightweight, high-efficiency passive shielding or active electromagnetic deflectors remain undeveloped.
science-space
global-unspecified
human
spaceflight
severely
limited
high-energy
galactic
cosmic
ray
exposure
long-duration
shielding
society-governance
missions
health-biology
know
open
Global / Unspecified, Global
Hydrogen and oxygen boil off due to solar radiation in orbit, prohibiting long-duration storage for deep space stages. Advanced active cryocooling, sunshields, and zero-boil-off insulation technologies are required.
science-space
global-unspecified
boil
off
storage
cryogenic
liquid
propellants
rapidly
during
long-term
orbital
climate-environment
long
society-governance
safe
technologies
smallholder
open
Global / Unspecified, Global
Current space stations must re-supply metabolic consumables, water filtration media, and trace contaminant gases from Earth. Fully regenerative bio-synthetic life support systems are essential for long-term lunar and Martian outposts.
science-space
global-unspecified
life
support
systems
100
closed-loop
environmental
control
eclss
not
exist
society-governance
climate-environment
technology-computing
philosophy-ethics
mathematics-logic
whether
open
Global / Unspecified, Global
Cephalad fluid shifts in microgravity increase intracranial pressure, leading to structural eye deformation and vision impairment. Non-invasive, flight-ready therapies or fluid-redistribution suits are urgently required.
science-space
global-unspecified
vision
spaceflight-associated
neuro-ocular
syndrome
sans
impairs
long-duration
astronaut
cephalad
fluid
health-biology
affordable
way
philosophy-ethics
whether
resolved
open
Global / Unspecified, Global
While kinetic impactors work against predictable asteroids, long-period comets can appear with less than a year's warning. Rapid-response high-yield interception systems are needed to protect Earth from unexpected impacts.
economics-resources
global-unspecified
have
proven
way
divert
planet-threatening
comet
short-notice
trajectory
while
kinetic
systems
whether
philosophy-ethics
resolved
don
determine
open
Global / Unspecified, Global
Gas-pressurized suits strain astronaut joints, limiting mobility and causing physical fatigue during extravehicular activities. Mechanical counter-pressure suit technology (biosuits) needs practical design breakthroughs.
science-space
global-unspecified
suits
space
too
heavy
rigid
exhausting
long-duration
planetary
surface
exploration
suit
current
haven
whether
mathematics-logic
technology-computing
open
Global / Unspecified, Global
Robotic planetary landers are restricted by payload weight and power, making complex lab chemistry difficult on site. Micro-fluidic lab-on-a-chip biosensors are required to analyze Martian or icy moon soil in-situ.
science-space
global-unspecified
lack
ultra-sensitive
miniaturized
instruments
detect
low
concentrations
bio-organic
molecules
robotic
power
sources
autonomous
long
situ
extraction
open
Global / Unspecified, Global
Multi-year missions introduce sensory deprivation, communication delays, and high stress among crew members. Biomarker tracking, behavioral software, and crew dynamics protocols are needed to preserve mental health.
science-space
global-unspecified
mental-health
long-term
human
isolation
confined
space
environments
leads
severe
psychological
friction
mental
health
support
missions
medical
open
Global / Unspecified, Global
Missions passing from the inner solar system to the deep outer cold face severe thermal swings that degrade instruments. Variable emissivity smart materials and active thermal fluid loops are needed.
climate-environment
global-unspecified
thermal
active
interplanetary
spacecraft
lack
lightweight
control
systems
extreme
environments
science-space
long
storage
whether
materials
designs
open
Global / Unspecified, Global
Medicines used on Earth lose potency rapidly on orbit, endangering astronauts on long multi-year Mars missions. Developing radiation-shielded drug formulations and long-shelf-life stabilizing active compounds is required.
health-biology
global-unspecified
pharmaceuticals
break
down
significantly
faster
microgravity
cosmic
radiation
conditions
medicines
science-space
missions
support
medical
psychological
long
open
Global / Unspecified, Global
Atmospheric pressure and temperatures inside gas giants destroy probes long before reaching their cores. Advanced gravitational mapping, seismic sensors, and neutrino probes are needed to uncover their core states.
science-space
global-unspecified
gas
cannot
directly
study
interior
structures
giant
planets
like
jupiter
climate-environment
internal
dynamics
open
Global / Unspecified, Global
Solar-powered stratospheric drones designed for continuous Earth observation fail to survive long winter nights due to payload weight. Breakthrough high energy-density batteries and ultra-light solar wings are needed.
science-space
global-unspecified
commercial
high-altitude
pseudo-satellites
haps
face
severe
battery
density
limitations
solar-powered
climate-environment
solar
high
efficiency
cells
radiation
open
Global / Unspecified, Global
Vitamins B and C degrade rapidly in packaged space foods, leaving long-haul Mars crews at risk of malnutrition. In-situ cellular agriculture and automated microbial nutrient synthesizers are required.
science-space
global-unspecified
space
current
food
systems
lose
nutritional
value
acceptability
years
storage
whether
philosophy-ethics
mathematics-logic
haven
health-biology
fully
open
Global / Unspecified, Global
Radiation-induced genetic mutations build up silently, increasing crew cancer risks on long space missions. Handheld micro-sequencers capable of real-time DNA/RNA error profiling are required in orbit.
science-space
global-unspecified
real-time
capable
dna
lack
biosensors
detecting
mutation
rates
astronauts
during
systems
real
time
society-governance
responding
predicting
open
Global / Unspecified, Global
Permanently shadowed craters at the lunar poles reach -240°C, making metals and polymers brittle and prone to shattering. Special cryogenic-resistant alloys and thermal insulation jackets are required.
society-governance
global-unspecified
lunar
reach
permanent
night
regions
near
absolute
zero
causing
severe
industrial
scale
propellant
structural
long
lack
open
Global / Unspecified, Global
Chemical lithium-hydroxide canisters are consumable, heavy, and wasteful for multi-year missions. Algae photo-bioreactors capable of converting human exhaled CO2 directly into oxygen and edible protein are required.
climate-environment
global-unspecified
human
lack
closed-loop
biological
carbon
dioxide
scrubbers
spacecraft
cabins
chemical
society-governance
solutions
long
mathematics-logic
science-space
term
open
Global / Unspecified, Global
Mars (0.38g) and the Moon (0.16g) have partial gravity levels whose long-term impact on embryo development is completely unknown. Ground-based and orbital partial-gravity mammalian centrifuges are required.
society-governance
global-unspecified
mammalian
development
partial
gravity
not
know
gestation
safely
occur
mars
mathematics-logic
whether
philosophy-ethics
fully
climate-environment
open
Global / Unspecified, Global
Pressurized gloves force astronauts to constantly fight suit resistance, leading to fingernail loss and severe hand fatigue. Robotic assistance exoskeletons or active pressure-sensing glove joints are needed.
science-space
global-unspecified
suit
gloves
hand
current
space
restrict
dexterity
cause
physical
trauma
work
haven
developed
spacesuit
lets
astronauts
open
Global / Unspecified, Global
Closed space station biomes combined with radiation select for rapid bacterial mutation, risking astronaut health. Autonomous metagenomic sequencing systems must continuously monitor station surfaces for bio-threats.
science-space
global-unspecified
drug-resistant
station
monitor
space
cannot
long-term
microbial
mutations
yield
multi-drug
resistant
systems
support
missions
medical
psychological