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.
1355 total logged
1355 still open
0 marked solved
7 registered profiles
We can't yet build affordable, reusable spacecraft capable of routine trips beyond low Earth orbit.
open
Global / Unspecified, Global
Almost all current reusable rocket technology is built for missions close to Earth, while deep space missions still rely on expensive, largely disposable hardware. Extending reusability further out could reshape space exploration economics.
Citation ID: WS00306
Title: We can't yet build affordable, reusable spacecraft capable of routine trips beyond low Earth orbit.
URL: https://www.worldsolve.org/index.php?api=problem&id=306
We don't know for certain whether Mars ever hosted, or still hosts, any form of microbial life.
open
Global / Unspecified, Global
Evidence suggests Mars once had liquid water, a key ingredient for life, but no mission has yet found conclusive proof of past or present microbes. Answering this remains one of planetary science's biggest open questions.
Citation ID: WS00305
Title: We don't know for certain whether Mars ever hosted, or still hosts, any form of microbial life.
URL: https://www.worldsolve.org/index.php?api=problem&id=305
We haven't found a way to store scientific samples from space missions without any risk of degradation over decades.
open
Global / Unspecified, Global
Precious samples brought back from the Moon or asteroids need to remain scientifically useful for generations of future researchers. Long-term sample preservation technology hasn't fully caught up with mission ambitions.
Citation ID: WS00304
Title: We haven't found a way to store scientific samples from space missions without any risk of degradation over decades.
URL: https://www.worldsolve.org/index.php?api=problem&id=304
We can't yet predict exactly how climate change will alter ocean currents over the coming decades.
open
Global / Unspecified, Global
Ocean currents regulate weather and temperature worldwide, and small changes could have outsized global effects. Current climate models still can't predict these shifts with the precision policymakers need.
Citation ID: WS00303
Title: We can't yet predict exactly how climate change will alter ocean currents over the coming decades.
URL: https://www.worldsolve.org/index.php?api=problem&id=303
We don't have a full understanding of how the human body adapts, or fails to adapt, to long-term weightlessness.
open
Global / Unspecified, Global
Astronauts on extended missions lose bone density and muscle mass faster than doctors can fully explain or prevent. Understanding this better is essential before any mission lasting years, like a trip to Mars.
Citation ID: WS00302
Title: We don't have a full understanding of how the human body adapts, or fails to adapt, to long-term weightlessness.
URL: https://www.worldsolve.org/index.php?api=problem&id=302
We haven't built a practical way to clean up the growing amount of debris orbiting Earth.
open
Global / Unspecified, Global
Thousands of dead satellites and fragments now circle the planet, and a single collision can create thousands more pieces of debris. Left unmanaged, this could eventually make some orbits too dangerous to use safely.
Citation ID: WS00301
Title: We haven't built a practical way to clean up the growing amount of debris orbiting Earth.
URL: https://www.worldsolve.org/index.php?api=problem&id=301
We don't have a consistent global framework for protecting underwater archaeological sites from looting.
open
Global / Unspecified, Global
Shipwrecks and sunken settlements often hold historically valuable artifacts that are vulnerable to looting due to weak or inconsistent international protection. A stronger shared framework remains unbuilt.
Citation ID: WS00300
Title: We don't have a consistent global framework for protecting underwater archaeological sites from looting.
URL: https://www.worldsolve.org/index.php?api=problem&id=300
We haven't found a way to prevent important scientific data from being lost when research funding ends.
open
Global / Unspecified, Global
Valuable datasets from completed research projects are sometimes lost entirely once funding and staff move on, wasting years of prior work. A shared system for preserving this data long-term remains underdeveloped.
Citation ID: WS00299
Title: We haven't found a way to prevent important scientific data from being lost when research funding ends.
URL: https://www.worldsolve.org/index.php?api=problem&id=299
We can't yet make museums and libraries around the world fully accessible to people who can't travel to visit them.
open
Global / Unspecified, Global
Enormous amounts of human knowledge and art remain physically locked inside buildings that most of the world's population will never get to visit in person. Making this content genuinely accessible remotely remains incomplete.
Citation ID: WS00298
Title: We can't yet make museums and libraries around the world fully accessible to people who can't travel to visit them.
URL: https://www.worldsolve.org/index.php?api=problem&id=298
We don't have a reliable, affordable way to identify unmarked human remains from historical conflicts or disasters.
open
Global / Unspecified, Global
Thousands of victims from past wars and disasters remain unidentified, leaving families without closure decades later. Better, cheaper identification methods could resolve many of these long-standing cases.
Citation ID: WS00297
Title: We don't have a reliable, affordable way to identify unmarked human remains from historical conflicts or disasters.
URL: https://www.worldsolve.org/index.php?api=problem&id=297
We haven't solved how to preserve oral histories and traditions before the last speakers or keepers pass away.
open
Global / Unspecified, Global
Much of humanity's cultural knowledge lives only in memory, passed down verbally, and disappears permanently when the last person who remembers it dies. Systematic preservation efforts remain underfunded and incomplete.
Citation ID: WS00296
Title: We haven't solved how to preserve oral histories and traditions before the last speakers or keepers pass away.
URL: https://www.worldsolve.org/index.php?api=problem&id=296
We haven't proven a rigorous, complete theory explaining turbulence in fluids mathematically.
open
Global / Unspecified, Global
Turbulent flow, like water rushing through a pipe or air moving over a wing, is notoriously hard to describe with exact mathematics. A complete theory would improve everything from weather prediction to aircraft design.
Citation ID: WS00295
Title: We haven't proven a rigorous, complete theory explaining turbulence in fluids mathematically.
URL: https://www.worldsolve.org/index.php?api=problem&id=295
We don't have a general formula predicting exactly how many prime numbers exist below any given number.
open
Global / Unspecified, Global
We have very good approximations, but no exact formula exists that perfectly predicts the count of primes below a chosen number. Improving this approximation remains an active and important area of research.
Citation ID: WS00294
Title: We don't have a general formula predicting exactly how many prime numbers exist below any given number.
URL: https://www.worldsolve.org/index.php?api=problem&id=294
We haven't settled whether every sufficiently large even number can always be written as the sum of two prime numbers.
open
Global / Unspecified, Global
This idea, part of an old and famous conjecture, has held true in every case checked so far but has never been proven true for all numbers without exception.
Citation ID: WS00293
Title: We haven't settled whether every sufficiently large even number can always be written as the sum of two prime numbers.
URL: https://www.worldsolve.org/index.php?api=problem&id=293
We don't have a complete solution to the traveling salesman problem for very large numbers of locations.
open
Global / Unspecified, Global
Finding the shortest possible route visiting a long list of locations becomes exponentially harder as the list grows, and no fully efficient general solution exists. Logistics, chip design, and delivery networks all run into this limit.
Citation ID: WS00292
Title: We don't have a complete solution to the traveling salesman problem for very large numbers of locations.
URL: https://www.worldsolve.org/index.php?api=problem&id=292
We haven't proven whether there are infinitely many twin prime numbers.
open
Global / Unspecified, Global
Twin primes are pairs of prime numbers that differ by only two, and mathematicians strongly suspect there are infinitely many, but nobody has proven it. This remains one of number theory's oldest open questions.
Citation ID: WS00291
Title: We haven't proven whether there are infinitely many twin prime numbers.
URL: https://www.worldsolve.org/index.php?api=problem&id=291
We haven't settled what obligations, if any, humans have toward preserving species that provide no direct benefit to people.
open
Global / Unspecified, Global
Conservation efforts often focus on species useful or appealing to humans, leaving the ethical status of less charismatic species less clear. Whether all species deserve equal protection regardless of usefulness remains unresolved.
Citation ID: WS00290
Title: We haven't settled what obligations, if any, humans have toward preserving species that provide no direct benefit to people.
URL: https://www.worldsolve.org/index.php?api=problem&id=290
We don't agree on whether nations have a moral duty to accept refugees beyond what international law requires.
open
Global / Unspecified, Global
International law sets minimum obligations toward refugees, but whether wealthier nations have a deeper moral duty beyond the legal minimum remains a genuinely contested ethical question.
Citation ID: WS00289
Title: We don't agree on whether nations have a moral duty to accept refugees beyond what international law requires.
URL: https://www.worldsolve.org/index.php?api=problem&id=289
We haven't found a shared ethical framework for how much risk is acceptable when developing powerful new technologies.
open
Global / Unspecified, Global
Every major technology carries some risk of misuse or unintended harm, but there's no agreed standard for how much risk is acceptable before restricting or slowing development.
Citation ID: WS00288
Title: We haven't found a shared ethical framework for how much risk is acceptable when developing powerful new technologies.
URL: https://www.worldsolve.org/index.php?api=problem&id=288
We don't agree on how much a person's circumstances should excuse them from moral or legal responsibility.
open
Global / Unspecified, Global
Poverty, trauma, and social conditions can heavily influence behavior, but there's no settled agreement on how much this should reduce someone's responsibility for their actions.
Citation ID: WS00287
Title: We don't agree on how much a person's circumstances should excuse them from moral or legal responsibility.
URL: https://www.worldsolve.org/index.php?api=problem&id=287
