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
open
Global / Unspecified, Global
Underwater noise from ships can interfere with the way whales and other marine mammals communicate and navigate, and mitigation measures remain inconsistently enforced across major shipping routes. Reducing this impact remains an underaddressed conservation issue.
climate-environment
global-unspecified
way
noise
marine
shipping
don
have
effective
prevent
pollution
disrupting
philosophy-ethics
whether
determine
resolved
agreed
open
Global / Unspecified, Global
Overgrazing, deforestation, and changing rainfall patterns continue to push arid regions toward full desertification faster than restoration projects can reverse. Scaling effective land restoration to match the pace of degradation remains unresolved.
climate-environment
global-unspecified
deforestation
effective
desertification
arid
regions
don
have
affordable
way
prevent
spreading
whether
philosophy-ethics
determine
resolved
agreed
open
Global / Unspecified, Global
Tropical forests host a huge share of the world's biodiversity, and converting this land for farming, even when done for legitimate food needs, often results in permanent species loss. Balancing food production with biodiversity protection remains unresolved.
climate-environment
global-unspecified
biodiversity
loss
tropical
forests
don
have
scalable
way
prevent
being
philosophy-ethics
whether
determine
resolved
agreed
open
Global / Unspecified, Global
Construction and demolition debris makes up a significant share of total waste in many rapidly growing cities, and recycling this material at scale remains inconsistently practiced. Reducing this waste stream remains an unresolved urban sustainability issue.
climate-environment
global-unspecified
waste
construction
demolition
growing
cities
don
have
effective
way
prevent
whether
philosophy-ethics
determine
resolved
agreed
open
Global / Unspecified, Global
Excess natural gas at oil extraction sites is often simply burned off rather than captured and used, wasting a valuable resource while releasing preventable emissions. Capturing this gas instead of flaring it remains inconsistently adopted across the industry.
climate-environment
global-unspecified
gas
oil
flaring
wasting
releasing
emissions
don
have
scalable
way
philosophy-ethics
whether
determine
agreed
resolved
prevent
open
Global / Unspecified, Global
Ships can unintentionally transport invasive species across oceans in the water they carry for stability, introducing them to ecosystems where they can cause serious ecological disruption. Fully preventing this transfer remains inconsistently enforced globally.
mathematics-logic
global-unspecified
invasive
species
water
ships
don
have
effective
way
prevent
spread
philosophy-ethics
whether
determine
resolved
agreed
open
Global / Unspecified, Global
Poaching and illegal trade continue to threaten species like elephants, rhinos, and pangolins despite international protections, because enforcement remains inconsistent and demand persists. Closing this gap between law and enforcement remains an unresolved global conservation issue.
society-governance
global-unspecified
illegal
species
don
have
scalable
way
prevent
wildlife
trafficking
pushing
philosophy-ethics
whether
determine
resolved
agreed
open
Global / Unspecified, Global
As farmland expands to meet growing food demand, it frequently cuts through pathways that wildlife species depend on for seasonal migration. Balancing agricultural needs with preserving these corridors remains an unresolved land-use challenge.
social-civic-problems
global-unspecified
agricultural
wildlife
migration
corridors
don
have
effective
way
prevent
expansion
philosophy-ethics
whether
determine
resolved
agreed
open
Global / Unspecified, Global
Biodegradable packaging alternatives exist but often don't yet match the protective qualities of traditional plastic needed to keep food safe and fresh for the same duration. Closing this performance gap remains an unresolved materials science challenge.
climate-environment
global-unspecified
plastic
packaging
biodegradable
food
haven
found
way
make
fully
compromising
whether
philosophy-ethics
mathematics-logic
resolved
determine
don
open
Global / Unspecified, Global
Sharks reproduce much more slowly than most fish, making their populations especially vulnerable to overfishing and slow to recover even after protective measures are introduced. Enforcing sustainable limits globally remains an unresolved challenge.
climate-environment
global-unspecified
overfishing
populations
slow
reproduce
recover
don
have
scalable
way
prevent
philosophy-ethics
whether
determine
resolved
agreed
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
Global / Unspecified, Global
Invasive plants can spread aggressively in protected parks and reserves, outcompeting native species even where conservation efforts are actively underway. Effective, affordable control methods that don't damage the broader ecosystem remain incomplete.
health-biology
global-unspecified
don
invasive
species
native
protected
have
scalable
way
prevent
plant
philosophy-ethics
determine
whether
resolved
agreed
open
Global / Unspecified, Global
Vultures help prevent disease spread by consuming carcasses quickly, but populations have declined sharply in various regions due to poisoning and habitat loss. Protecting this often-overlooked but ecologically important species remains an unresolved conservation issue.
mathematics-logic
global-unspecified
have
prevent
populations
don
effective
way
decline
vulture
play
crucial
whether
philosophy-ethics
determine
resolved
agreed
open
Global / Unspecified, Global
River dolphins are highly sensitive to pollution and habitat disruption, and several populations have declined sharply as rivers become more polluted and fragmented by development. Reversing this decline remains an unresolved conservation priority.
climate-environment
global-unspecified
have
decline
river
populations
pollution
habitat
don
scalable
way
prevent
philosophy-ethics
whether
determine
resolved
agreed
open
Global / Unspecified, Global
Monarch butterflies depend on specific milkweed habitats along their long migration routes, and the loss of this habitat across multiple countries has contributed to sharp population declines. Coordinating protection across their entire migratory range remains unresolved.
social-civic-problems
global-unspecified
monarch
habitat
loss
along
migration
routes
don
have
effective
way
philosophy-ethics
whether
determine
agreed
resolved
prevent
open
Global / Unspecified, Global
As cities and suburbs expand, they often replace the wildflower meadows and natural habitats that pollinators depend on with lawns and pavement. Designing urban growth that preserves pollinator habitat remains inconsistently practiced.
society-governance
global-unspecified
pollinator
habitat
urban
don
have
effective
way
prevent
loss
caused
whether
philosophy-ethics
determine
agreed
resolved
open
Global / Unspecified, Global
As demand grows for minerals used in batteries and electronics, deep-sea mining is expanding into ecosystems that remain poorly understood and could take centuries to recover from disruption. Regulating this before major damage occurs remains an unresolved governance and environmental challenge.
society-governance
global-unspecified
deep-sea
ecosystems
mining
don
have
scalable
way
prevent
depletion
emerging
whether
philosophy-ethics
determine
resolved
agreed
open
Global / Unspecified, Global
Degraded peatlands release significant amounts of stored carbon, and restoring them to their natural, carbon-storing state requires careful, sustained management that many restoration projects don't achieve. Making this restoration reliably effective remains unresolved.
climate-environment
global-unspecified
carbon-emissions
restoration
effective
significant
carbon
degraded
haven
solved
make
peatland
enough
philosophy-ethics
whether
way
determine
don
open
Global / Unspecified, Global
Fish introduced into new waterways for recreational or food purposes can sometimes outcompete or prey on native species, causing lasting ecological disruption. Preventing or reversing this kind of introduction remains an unresolved conservation challenge.
mathematics-logic
global-unspecified
biodiversity
fish
species
introduced
food
native
don
have
effective
way
prevent
philosophy-ethics
whether
determine
resolved
agreed
open
Global / Unspecified, Global
Managed honeybees, while important for agriculture, can sometimes outcompete native pollinator species for food resources when placed in sensitive natural areas. Balancing agricultural pollination needs with native species protection remains an unresolved ecological challenge.
mathematics-logic
global-unspecified
native
species
pollinator
managed
don
have
scalable
way
prevent
decline
philosophy-ethics
whether
determine
resolved
agreed