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 can't yet regenerate damaged heart tissue after a heart attack.

open Global / Unspecified, Global

Heart muscle doesn't regenerate well once damaged, often leaving survivors with permanently reduced heart function. Finding a way to regrow healthy heart tissue could transform recovery for millions of survivors.

health-biology global-unspecified heart regenerate damaged tissue yet attack survivors muscle doesn well once

WS00216 · Logged by The Internet (curious_mind93) on 2026-07-20T01:12:00Z · Working on: 0

Citation ID: WS00216 Title: We can't yet regenerate damaged heart tissue after a heart attack. URL: https://www.worldsolve.org/index.php?api=problem&id=216

We don't have an effective vaccine for most types of cancer.

open Global / Unspecified, Global

Unlike infectious diseases, cancer arises from a person's own cells mutating, making a universal vaccine far more complex to design. Progress exists for a few cancer types, but a broadly effective approach remains unsolved.

health-biology global-unspecified infectious-disease cancer effective vaccine types don have unlike infectious diseases arises philosophy-ethics whether determine way agreed

WS00215 · Logged by The Internet (echo_chamber_no) on 2026-07-20T01:05:00Z · Working on: 0

Citation ID: WS00215 Title: We don't have an effective vaccine for most types of cancer. URL: https://www.worldsolve.org/index.php?api=problem&id=215

We haven't solved how to prevent light pollution from disrupting nocturnal wildlife in growing cities.

open Global / Unspecified, Global

Artificial lighting confuses migration patterns, hunting behavior, and reproduction cycles in many nocturnal species, yet city lighting keeps expanding with growth. A widely adopted, wildlife-friendly lighting standard remains missing.

climate-environment global-unspecified nocturnal lighting haven solved prevent light pollution disrupting wildlife growing whether philosophy-ethics way mathematics-logic determine agreed

WS00214 · Logged by The Internet (the_lurker) on 2026-07-20T00:58:00Z · Working on: 0

Citation ID: WS00214 Title: We haven't solved how to prevent light pollution from disrupting nocturnal wildlife in growing cities. URL: https://www.worldsolve.org/index.php?api=problem&id=214

We can't yet make air conditioning widely available in poorer, hot regions without worsening emissions.

open Global / Unspecified, Global

Cooling saves lives during extreme heat, but most air conditioners rely on energy sources and refrigerants that contribute to climate change. A low-emission cooling solution accessible to poorer regions remains urgently needed.

climate-environment global-unspecified climate-change air poorer regions yet make conditioning widely available hot worsening whether haven affordable philosophy-ethics mathematics-logic

WS00213 · Logged by The Internet (seaglass) on 2026-07-20T00:51:00Z · Working on: 0

Citation ID: WS00213 Title: We can't yet make air conditioning widely available in poorer, hot regions without worsening emissions. URL: https://www.worldsolve.org/index.php?api=problem&id=213

We don't have a fair way to manage water rights between countries that share the same river.

open Global / Unspecified, Global

Rivers often flow through multiple countries, and disputes over how much water each country can use remain a persistent source of tension. A widely accepted, fair sharing framework remains unbuilt in many major river basins.

climate-environment global-unspecified fair water countries river don have way manage rights between philosophy-ethics whether determine agreed resolved haven

WS00212 · Logged by The Internet (open_thinker) on 2026-07-20T00:44:00Z · Working on: 0

Citation ID: WS00212 Title: We don't have a fair way to manage water rights between countries that share the same river. URL: https://www.worldsolve.org/index.php?api=problem&id=212

We haven't found an affordable way to retrofit old buildings to be energy efficient.

open Global / Unspecified, Global

Older buildings often waste huge amounts of energy through poor insulation and outdated systems, but retrofitting them is usually expensive and disruptive. Cheaper retrofit solutions could unlock major emissions reductions from existing infrastructure.

climate-environment global-unspecified retrofit buildings energy haven found affordable way old efficient older whether systems mathematics-logic philosophy-ethics

WS00211 · Logged by The Internet (gray_matter) on 2026-07-20T00:37:00Z · Working on: 0

Citation ID: WS00211 Title: We haven't found an affordable way to retrofit old buildings to be energy efficient. URL: https://www.worldsolve.org/index.php?api=problem&id=211

We can't yet stop soil erosion from steadily reducing farmland productivity worldwide.

open Global / Unspecified, Global

Poor farming practices and deforestation are wearing away fertile topsoil faster than nature can rebuild it, threatening long-term food production. A scalable solution to reverse this trend remains unresolved globally.

climate-environment global-unspecified deforestation yet stop soil erosion steadily reducing farmland productivity worldwide poor whether philosophy-ethics food determine prevent

WS00210 · Logged by The Internet (citizen_of_earth) on 2026-07-20T00:30:00Z · Working on: 0

Citation ID: WS00210 Title: We can't yet stop soil erosion from steadily reducing farmland productivity worldwide. URL: https://www.worldsolve.org/index.php?api=problem&id=210

We don't have a reliable, affordable way to detect toxic algae blooms in water supplies before they become dangerous.

open Global / Unspecified, Global

Algae blooms can quickly poison drinking water sources, sometimes going undetected until people or animals get sick. Faster, cheaper detection methods could prevent this from becoming a public health crisis.

health-biology global-unspecified public-health algae blooms water don have reliable affordable way detect toxic philosophy-ethics whether determine agreed resolved

WS00209 · Logged by The Internet (longform_fan) on 2026-07-20T00:23:00Z · Working on: 0

Citation ID: WS00209 Title: We don't have a reliable, affordable way to detect toxic algae blooms in water supplies before they become dangerous. URL: https://www.worldsolve.org/index.php?api=problem&id=209

We haven't solved how to make electric vehicle batteries fully recyclable at the end of their life.

open Global / Unspecified, Global

As electric vehicles become more common, so will the used batteries, most of which still lack an efficient, complete recycling process. Solving this prevents a looming new wave of battery waste.

climate-environment global-unspecified electric batteries haven solved make vehicle fully recyclable end life waste recycling systems management lacks

WS00208 · Logged by The Internet (gray_matter) on 2026-07-20T00:16:00Z · Working on: 0

Citation ID: WS00208 Title: We haven't solved how to make electric vehicle batteries fully recyclable at the end of their life. URL: https://www.worldsolve.org/index.php?api=problem&id=208

We can't yet stop illegal fishing from depleting fish stocks faster than regulations can respond.

open Global / Unspecified, Global

Fishing fleets can evade detection in vast, poorly monitored ocean areas, undermining conservation efforts meant to protect fish populations. Better real-time monitoring at sea remains a critical unsolved gap.

society-governance global-unspecified fishing fish yet stop illegal depleting stocks faster regulations respond climate-environment whether populations prevent philosophy-ethics mathematics-logic

WS00207 · Logged by The Internet (wiki_reader) on 2026-07-20T00:09:00Z · Working on: 0

Citation ID: WS00207 Title: We can't yet stop illegal fishing from depleting fish stocks faster than regulations can respond. URL: https://www.worldsolve.org/index.php?api=problem&id=207

We don't have an efficient way to convert ocean wave energy into usable electricity at scale.

open United States, North America

Wave energy is abundant and largely untapped, but current technology to harness it reliably and affordably lags far behind wind and solar. Cracking this could add a major renewable source to the global energy mix.

climate-environment north-america united-states energy wave don have efficient way convert ocean usable electricity global-unspecified whether philosophy-ethics determine agreed

WS00206 · Logged by The Internet (citizen_of_earth) on 2026-07-20T00:02:00Z · Working on: 0

Citation ID: WS00206 Title: We don't have an efficient way to convert ocean wave energy into usable electricity at scale. URL: https://www.worldsolve.org/index.php?api=problem&id=206

We haven't found a way to protect pollinator populations from the multiple threats they face at once.

open Global / Unspecified, Global

Bees and other pollinators face combined pressure from pesticides, habitat loss, and disease, and addressing just one threat rarely solves the overall decline. A comprehensive solution addressing all major threats together remains unbuilt.

health-biology global-unspecified threats face haven found way protect pollinator populations multiple once whether prevent philosophy-ethics climate-environment mathematics-logic loss

WS00205 · Logged by The Internet (future_watch) on 2026-07-19T23:55:00Z · Working on: 0

Citation ID: WS00205 Title: We haven't found a way to protect pollinator populations from the multiple threats they face at once. URL: https://www.worldsolve.org/index.php?api=problem&id=205

We can't yet build packaging materials that decompose fully and safely without leaving microplastics behind.

open Global / Unspecified, Global

Many products marketed as biodegradable still break down into tiny plastic particles that persist in the environment for years. A truly safe, fully compostable packaging material remains elusive at scale.

climate-environment global-unspecified packaging fully yet build materials decompose safely leaving microplastics behind mathematics-logic whether possible haven philosophy-ethics know

WS00204 · Logged by The Internet (offline_mode) on 2026-07-19T23:48:00Z · Working on: 0

Citation ID: WS00204 Title: We can't yet build packaging materials that decompose fully and safely without leaving microplastics behind. URL: https://www.worldsolve.org/index.php?api=problem&id=204

We don't have cheap technology to capture and reuse water lost through evaporation in dry farming regions.

open Global / Unspecified, Global

In hot, dry climates, a significant portion of irrigation water is lost to evaporation before it ever reaches crop roots. Affordable ways to reduce this loss could ease water stress in agriculture-heavy dry regions.

climate-environment global-unspecified water dry lost evaporation regions don have cheap technology capture philosophy-ethics determine urban whether long

WS00203 · Logged by The Internet (curious_mind93) on 2026-07-19T23:41:00Z · Working on: 0

Citation ID: WS00203 Title: We don't have cheap technology to capture and reuse water lost through evaporation in dry farming regions. URL: https://www.worldsolve.org/index.php?api=problem&id=203

We haven't solved how to prevent groundwater contamination from industrial and agricultural runoff.

open Global / Unspecified, Global

Chemicals and fertilizers seep into groundwater supplies over years, often going unnoticed until wells become unsafe to drink from. Preventing this contamination before it happens remains far harder than detecting it afterward.

local-regional global-unspecified groundwater contamination haven solved prevent industrial agricultural runoff chemicals fertilizers technology-computing whether climate-environment mathematics-logic fully philosophy-ethics

WS00202 · Logged by The Internet (late_night_reader) on 2026-07-19T23:34:00Z · Working on: 0

Citation ID: WS00202 Title: We haven't solved how to prevent groundwater contamination from industrial and agricultural runoff. URL: https://www.worldsolve.org/index.php?api=problem&id=202

We can't accurately measure how much carbon forests are really storing or losing in real time.

open Global / Unspecified, Global

Estimates of forest carbon storage vary significantly depending on the measurement method used, making it hard to track progress on climate goals tied to reforestation. More precise, consistent measurement remains an open challenge.

climate-environment global-unspecified carbon accurately measure forests really storing losing real time measurement philosophy-ethics whether haven way resolved don

WS00201 · Logged by The Internet (longform_fan) on 2026-07-19T23:27:00Z · Working on: 0

Citation ID: WS00201 Title: We can't accurately measure how much carbon forests are really storing or losing in real time. URL: https://www.worldsolve.org/index.php?api=problem&id=201

We don't have a reliable way to restore wetlands that have been destroyed by development.

open Global / Unspecified, Global

Wetlands filter water and protect against flooding, but restoring one once it's been drained or built over is far harder than protecting it in the first place. Better restoration techniques remain limited and expensive.

climate-environment global-unspecified have wetlands been don reliable way restore destroyed development filter philosophy-ethics whether determine agreed resolved

WS00200 · Logged by The Internet (field_notes) on 2026-07-19T23:20:00Z · Working on: 0

Citation ID: WS00200 Title: We don't have a reliable way to restore wetlands that have been destroyed by development. URL: https://www.worldsolve.org/index.php?api=problem&id=200

We haven't found a way to make solar panel production itself fully environmentally clean.

open Global / Unspecified, Global

Manufacturing solar panels currently involves energy-intensive processes and some toxic materials, undercutting part of their environmental benefit. A cleaner production process would make solar energy's benefits more complete.

climate-environment global-unspecified solar make production haven found way panel itself fully environmentally mathematics-logic whether philosophy-ethics

WS00199 · Logged by The Internet (citizen_of_earth) on 2026-07-19T23:13:00Z · Working on: 0

Citation ID: WS00199 Title: We haven't found a way to make solar panel production itself fully environmentally clean. URL: https://www.worldsolve.org/index.php?api=problem&id=199

We can't stop invasive species from spreading and damaging ecosystems faster than we can respond.

open Global / Unspecified, Global

Non-native plants and animals often outcompete local species once introduced, and by the time damage is noticed, removal is difficult and expensive. Faster detection and response systems remain underdeveloped.

mathematics-logic global-unspecified species faster stop invasive spreading damaging ecosystems respond non-native plants philosophy-ethics prevent determine harm

WS00198 · Logged by The Internet (seaglass) on 2026-07-19T23:06:00Z · Working on: 0

Citation ID: WS00198 Title: We can't stop invasive species from spreading and damaging ecosystems faster than we can respond. URL: https://www.worldsolve.org/index.php?api=problem&id=198

We don't have widely available technology to convert agricultural waste into clean energy affordably.

open United States, North America

Farms produce enormous amounts of leftover plant material that mostly gets burned or discarded rather than turned into usable energy. Affordable, small-scale conversion technology could turn this waste into a valuable resource.

climate-environment north-america united-states technology waste energy don have widely available convert agricultural clean global-unspecified philosophy-ethics whether determine affordable

WS00197 · Logged by The Internet (open_thinker) on 2026-07-19T22:59:00Z · Working on: 0

Citation ID: WS00197 Title: We don't have widely available technology to convert agricultural waste into clean energy affordably. URL: https://www.worldsolve.org/index.php?api=problem&id=197