World Solve — A living repository of problems worth solving.

What World Solve is

World Solve is a living, citable index of unsolved problems — written one line at a time by Team Humans Club, a global collective of builders, researchers, and entrepreneurs. We do not solve the problems here. We Democratize Innovation.

For builders Skip the search for a problem worth your time. Browse a vetted, growing list and start where the gap is real.

For entrepreneurs Every entry is a potential venture thesis — named early, explained plainly, ready to validate.

For researchers Cite any entry directly, track global needs by region, or pull the full dataset via the public API.

2165 total logged

2165 still open

0 marked solved

8 registered profiles

We haven't solved how to make air pollution monitoring accurate and affordable in the world's most polluted cities.

open Global / Unspecified, Global

Many heavily polluted cities in lower-income regions still lack dense, affordable monitoring networks that could help residents and policymakers respond in real time. Closing this data gap remains a persistent public health and environmental challenge.

climate-environment global-unspecified public-health air-pollution monitoring affordable polluted cities haven solved make air pollution accurate african remains access whether

WS00964 · Logged by The Internet (wiki_reader) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00964 Title: We haven't solved how to make air pollution monitoring accurate and affordable in the world's most polluted cities. URL: https://www.worldsolve.org/index.php?api=problem&id=964

We don't have a way to prevent plastic microfibers from shedding into water systems every time synthetic clothing is washed.

open Global / Unspecified, Global

Washing machines release countless tiny plastic fibers from synthetic fabrics into wastewater, and most filtration systems aren't designed to catch particles this small. This steady stream of microplastic pollution remains largely unaddressed at the source.

climate-environment global-unspecified plastic systems synthetic don have way prevent microfibers shedding water whether philosophy-ethics determine resolved mathematics-logic

WS00965 · Logged by The Internet (anon_1904) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00965 Title: We don't have a way to prevent plastic microfibers from shedding into water systems every time synthetic clothing is washed. URL: https://www.worldsolve.org/index.php?api=problem&id=965

We can't yet restore collapsed fish populations fast enough to keep pace with growing global seafood demand.

open Global / Unspecified, Global

Some fish populations have been fished to the point of collapse, and even with strict conservation measures, recovery can take decades longer than demand is willing to wait. Balancing recovery with continued food needs remains unresolved.

climate-environment global-unspecified fish populations demand yet restore collapsed fast enough keep pace whether philosophy-ethics determine prevent have way

WS00966 · Logged by The Internet (citizen_of_earth) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00966 Title: We can't yet restore collapsed fish populations fast enough to keep pace with growing global seafood demand. URL: https://www.worldsolve.org/index.php?api=problem&id=966

We haven't found a way to prevent soil erosion from outpacing the natural rate of soil formation.

open Global / Unspecified, Global

Soil erodes far faster than it naturally regenerates in many farming regions, threatening long-term food production capacity. Reversing this imbalance at a global scale remains an unresolved agricultural and environmental challenge.

climate-environment global-unspecified soil haven found way prevent erosion outpacing natural rate formation whether philosophy-ethics mathematics-logic determine

WS00967 · Logged by The Internet (future_watch) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00967 Title: We haven't found a way to prevent soil erosion from outpacing the natural rate of soil formation. URL: https://www.worldsolve.org/index.php?api=problem&id=967

We don't have an affordable way to convert agricultural waste into clean energy at scale in most farming regions.

open Global / Unspecified, Global

Crop residue and animal waste could theoretically be converted into biogas or other clean energy sources, but the infrastructure needed remains too costly for many farms to adopt. Scaling this technology affordably remains an unresolved opportunity.

climate-environment global-unspecified waste clean energy don have affordable way convert agricultural scale philosophy-ethics whether determine agreed resolved mathematics-logic

WS00968 · Logged by The Internet (gray_matter) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00968 Title: We don't have an affordable way to convert agricultural waste into clean energy at scale in most farming regions. URL: https://www.worldsolve.org/index.php?api=problem&id=968

We can't yet fully stop the acidification of oceans caused by rising carbon dioxide absorption.

open Global / Unspecified, Global

As oceans absorb more carbon dioxide from the atmosphere, they become more acidic in ways that threaten shellfish, coral, and the broader marine food chain. Reversing or even halting this chemical shift remains beyond current technology.

climate-environment global-unspecified oceans carbon dioxide yet fully stop acidification caused rising absorption prevent mathematics-logic whether philosophy-ethics health-biology

WS00969 · Logged by The Internet (stray_thought) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00969 Title: We can't yet fully stop the acidification of oceans caused by rising carbon dioxide absorption. URL: https://www.worldsolve.org/index.php?api=problem&id=969

We haven't solved how to protect migratory bird populations from habitat loss along their entire travel routes.

open Global / Unspecified, Global

Migratory birds depend on a chain of habitats across multiple countries, and losing even one critical stopover point can threaten an entire species' survival. Coordinating protection across this many jurisdictions remains an unresolved conservation challenge.

climate-environment global-unspecified migratory entire haven solved protect bird populations habitat loss along whether philosophy-ethics prevent way mathematics-logic have

WS00970 · Logged by The Internet (late_night_reader) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00970 Title: We haven't solved how to protect migratory bird populations from habitat loss along their entire travel routes. URL: https://www.worldsolve.org/index.php?api=problem&id=970

We don't have a scalable way to prevent illegal logging in protected rainforest reserves.

open Global / Unspecified, Global

Even legally protected forests are frequently logged illegally due to weak enforcement and high demand for timber, undermining conservation efforts on paper. Stopping this in practice, not just in law, remains an unresolved global challenge.

society-governance global-unspecified protected don have scalable way prevent illegal logging rainforest reserves philosophy-ethics whether determine agreed resolved

WS00971 · Logged by The Internet (anon_1904) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00971 Title: We don't have a scalable way to prevent illegal logging in protected rainforest reserves. URL: https://www.worldsolve.org/index.php?api=problem&id=971

We can't yet fully prevent the loss of wetlands that serve as natural flood buffers for nearby communities.

open Global / Unspecified, Global

Wetlands absorb floodwater and protect surrounding areas, but they continue to be drained or developed faster than they're restored in many regions. Protecting or rebuilding this natural infrastructure remains an unresolved environmental priority.

climate-environment global-unspecified wetlands natural yet fully prevent loss serve flood buffers nearby whether philosophy-ethics mathematics-logic haven way

WS00972 · Logged by The Internet (field_notes) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00972 Title: We can't yet fully prevent the loss of wetlands that serve as natural flood buffers for nearby communities. URL: https://www.worldsolve.org/index.php?api=problem&id=972

We haven't found an affordable way to desalinate water without producing large amounts of concentrated saltwater waste.

open Global / Unspecified, Global

Desalination plants typically discharge extremely salty brine back into the ocean, which can harm nearby marine ecosystems if not managed carefully. A cleaner, more sustainable desalination process remains technically unresolved.

climate-environment global-unspecified haven found affordable way desalinate water producing large amounts concentrated whether philosophy-ethics mathematics-logic prevent resolved

WS00973 · Logged by The Internet (future_watch) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00973 Title: We haven't found an affordable way to desalinate water without producing large amounts of concentrated saltwater waste. URL: https://www.worldsolve.org/index.php?api=problem&id=973

We don't have a reliable way to track and reduce the carbon footprint of global shipping and cargo transport.

open Global / Unspecified, Global

Ocean shipping produces a significant share of global greenhouse gas emissions, yet the industry has been slower than others to adopt cleaner fuel alternatives at scale. Speeding up this transition remains an unresolved climate challenge.

climate-environment global-unspecified shipping don have reliable way track reduce carbon footprint philosophy-ethics whether determine agreed resolved mathematics-logic

WS00974 · Logged by The Internet (field_notes) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00974 Title: We don't have a reliable way to track and reduce the carbon footprint of global shipping and cargo transport. URL: https://www.worldsolve.org/index.php?api=problem&id=974

We can't yet fully prevent the die-off of kelp forests caused by warming coastal waters.

open Global / Unspecified, Global

Kelp forests support diverse marine ecosystems but are increasingly vulnerable to warming waters and invasive species that outcompete them once they weaken. Restoring and protecting these ecosystems at scale remains an unresolved conservation challenge.

climate-environment global-unspecified kelp forests warming waters yet fully prevent die-off caused coastal whether philosophy-ethics mathematics-logic way resolved

WS00975 · Logged by The Internet (paper_trail) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00975 Title: We can't yet fully prevent the die-off of kelp forests caused by warming coastal waters. URL: https://www.worldsolve.org/index.php?api=problem&id=975

We haven't solved how to make composting infrastructure widely accessible in dense urban areas.

open Global / Unspecified, Global

Many cities lack convenient composting systems, so a significant share of food waste that could be composted still ends up in landfills producing methane. Scaling accessible composting infrastructure remains an unresolved urban sustainability challenge.

climate-environment global-unspecified composting infrastructure accessible urban haven solved make widely dense areas african systems cities whether

WS00976 · Logged by The Internet (gray_matter) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00976 Title: We haven't solved how to make composting infrastructure widely accessible in dense urban areas. URL: https://www.worldsolve.org/index.php?api=problem&id=976

We don't have an effective way to prevent light pollution from disrupting nocturnal wildlife behavior in growing cities.

open Global / Unspecified, Global

Artificial light at night can disorient migrating birds, disrupt insect populations, and interfere with other nocturnal wildlife behavior, and mitigation efforts remain inconsistently applied as urban areas expand. Balancing city growth with this ecological impact remains unresolved.

mathematics-logic global-unspecified light nocturnal wildlife behavior don have effective way prevent pollution philosophy-ethics determine whether agreed resolved

WS00977 · Logged by The Internet (echo_chamber_no) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00977 Title: We don't have an effective way to prevent light pollution from disrupting nocturnal wildlife behavior in growing cities. URL: https://www.worldsolve.org/index.php?api=problem&id=977

We can't yet fully prevent the depletion of groundwater aquifers that took thousands of years to form.

open United States, North America

Some of the world's largest aquifers are being pumped for irrigation and drinking water far faster than natural processes can refill them. Once fully depleted, these ancient water reserves may take centuries to recover, if they recover at all.

climate-environment north-america united-states fully aquifers yet prevent depletion groundwater took thousands years form global-unspecified whether philosophy-ethics mathematics-logic water

WS00978 · Logged by The Internet (offline_mode) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00978 Title: We can't yet fully prevent the depletion of groundwater aquifers that took thousands of years to form. URL: https://www.worldsolve.org/index.php?api=problem&id=978

We haven't found a way to make sustainable aviation fuel available at a large enough scale to meaningfully cut airline emissions.

open Global / Unspecified, Global

Sustainable aviation fuel exists but remains far more expensive and limited in supply than traditional jet fuel, keeping airline adoption slow. Scaling production to meet real demand remains an unresolved industry challenge.

climate-environment global-unspecified fuel sustainable aviation airline haven found way make available large whether philosophy-ethics mathematics-logic resolved determine

WS00979 · Logged by The Internet (the_lurker) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00979 Title: We haven't found a way to make sustainable aviation fuel available at a large enough scale to meaningfully cut airline emissions. URL: https://www.worldsolve.org/index.php?api=problem&id=979

We don't have a scalable way to restore mangrove forests fast enough to keep pace with coastal development pressure.

open Global / Unspecified, Global

Mangroves protect coastlines from storms and support rich ecosystems, but they continue to be cleared for development faster than restoration efforts can replace them. Speeding up restoration while slowing clearance remains unresolved.

climate-environment global-unspecified development don have scalable way restore mangrove forests fast enough philosophy-ethics whether determine agreed resolved prevent

WS00980 · Logged by The Internet (anon_1904) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00980 Title: We don't have a scalable way to restore mangrove forests fast enough to keep pace with coastal development pressure. URL: https://www.worldsolve.org/index.php?api=problem&id=980

We can't yet fully prevent oil spills from causing long-term damage to marine and coastal ecosystems.

open Global / Unspecified, Global

Even with improved spill response technology, oil spills can leave lasting ecological damage that persists for years after the initial cleanup appears complete. Preventing spills in the first place remains far more effective than any current cleanup method.

mathematics-logic global-unspecified spills oil damage yet fully prevent causing long-term marine coastal health-biology whether philosophy-ethics resolved caused

WS00981 · Logged by The Internet (hello_world) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00981 Title: We can't yet fully prevent oil spills from causing long-term damage to marine and coastal ecosystems. URL: https://www.worldsolve.org/index.php?api=problem&id=981

We haven't solved how to protect polar ecosystems from the compounding effects of warming and increased human activity.

open Global / Unspecified, Global

As Arctic ice recedes, increased shipping and resource extraction activity adds further pressure to already fragile polar ecosystems. Balancing economic interest with ecological protection in this newly accessible region remains unresolved.

economics-resources global-unspecified polar ecosystems increased activity haven solved protect compounding effects warming climate-environment philosophy-ethics whether prevent yet mathematics-logic

WS00982 · Logged by The Internet (paper_trail) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00982 Title: We haven't solved how to protect polar ecosystems from the compounding effects of warming and increased human activity. URL: https://www.worldsolve.org/index.php?api=problem&id=982

We don't have an effective way to prevent noise pollution from disrupting marine mammal communication in busy shipping lanes.

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 determine whether agreed resolved

WS00983 · Logged by The Internet (dev_null) on 2026-07-19T15:18:30Z · Working on: 0

Citation ID: WS00983 Title: We don't have an effective way to prevent noise pollution from disrupting marine mammal communication in busy shipping lanes. URL: https://www.worldsolve.org/index.php?api=problem&id=983