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 space habitats that fully replicate Earth-like gravity for long-term health.
open
Global / Unspecified, Global
Living without normal gravity weakens astronauts' bones and muscles over time. Practical, affordable ways to simulate gravity in space stations remain mostly untested at scale.
Citation ID: WS00166
Title: We can't yet build space habitats that fully replicate Earth-like gravity for long-term health.
URL: https://www.worldsolve.org/index.php?api=problem&id=166
We don't fully understand what lies beneath the icy surfaces of moons like Europa and Enceladus.
open
Global / Unspecified, Global
Some outer moons hide liquid oceans beneath thick ice, and possibly conditions that could support life. Getting real data from beneath that ice remains a major unsolved engineering and mission challenge.
Citation ID: WS00165
Title: We don't fully understand what lies beneath the icy surfaces of moons like Europa and Enceladus.
URL: https://www.worldsolve.org/index.php?api=problem&id=165
We haven't developed cost-effective ways to protect satellites from space weather damage.
open
Global / Unspecified, Global
Solar storms and radiation slowly degrade satellite electronics, shortening their working life and risking sudden failures. Better shielding could extend satellite lifespans and reduce costly replacements.
Citation ID: WS00164
Title: We haven't developed cost-effective ways to protect satellites from space weather damage.
URL: https://www.worldsolve.org/index.php?api=problem&id=164
We can't reliably simulate how black holes merge and release gravitational waves in fine detail.
open
Global / Unspecified, Global
Detecting gravitational waves was a breakthrough, but modeling exactly what happens during these violent mergers pushes our computing power and physics equations to their limits.
Citation ID: WS00163
Title: We can't reliably simulate how black holes merge and release gravitational waves in fine detail.
URL: https://www.worldsolve.org/index.php?api=problem&id=163
We don't have a full explanation for the strange, repeating radio signals detected from deep space.
open
Global / Unspecified, Global
Fast radio bursts flash briefly and then vanish, and we still don't fully understand what causes them. Some theories point to exotic stars, but no explanation is fully confirmed yet.
Citation ID: WS00162
Title: We don't have a full explanation for the strange, repeating radio signals detected from deep space.
URL: https://www.worldsolve.org/index.php?api=problem&id=162
We haven't found a cheap way to produce rocket fuel using local resources on the Moon or Mars.
open
Global / Unspecified, Global
Every kilogram of fuel launched from Earth adds enormous cost to a mission. Producing fuel on-site from ice or soil could make deep space missions dramatically more affordable.
Citation ID: WS00161
Title: We haven't found a cheap way to produce rocket fuel using local resources on the Moon or Mars.
URL: https://www.worldsolve.org/index.php?api=problem&id=161
We can't grow plants in space with the same yield and speed as on Earth.
open
Global / Unspecified, Global
Low gravity and different light conditions slow plant growth and change nutrient uptake in ways we don't fully understand yet. Solving this is essential for any long-duration space mission that needs fresh food.
Citation ID: WS00160
Title: We can't grow plants in space with the same yield and speed as on Earth.
URL: https://www.worldsolve.org/index.php?api=problem&id=160
We haven't explained why some galaxies rotate in ways that don't match visible matter alone.
open
Global / Unspecified, Global
This mismatch is part of the evidence for dark matter, but the details of how it shapes galaxy rotation are still not fully worked out. A better model would sharpen our understanding of galaxy formation.
Citation ID: WS00159
Title: We haven't explained why some galaxies rotate in ways that don't match visible matter alone.
URL: https://www.worldsolve.org/index.php?api=problem&id=159
We can't yet build rockets that are fully reusable without expensive refurbishment between flights.
open
Global / Unspecified, Global
Reusable rockets have cut costs, but they still require significant repair and inspection after each landing. True rapid reusability, like an airplane, would make space travel dramatically cheaper.
Citation ID: WS00158
Title: We can't yet build rockets that are fully reusable without expensive refurbishment between flights.
URL: https://www.worldsolve.org/index.php?api=problem&id=158
We don't know exactly how many potentially habitable planets exist in our galaxy.
open
Global / Unspecified, Global
We've confirmed thousands of exoplanets, but identifying which ones could truly support life requires data we mostly don't have yet. A clearer count would refocus the search for life beyond Earth.
Citation ID: WS00157
Title: We don't know exactly how many potentially habitable planets exist in our galaxy.
URL: https://www.worldsolve.org/index.php?api=problem&id=157
We haven't developed a spacesuit that lets astronauts work efficiently for extended periods without fatigue.
open
Global / Unspecified, Global
Current spacesuits are bulky, tiring, and limit fine motor movement, making long spacewalks physically exhausting. A more agile suit would make space construction and repair work far more practical.
Citation ID: WS00156
Title: We haven't developed a spacesuit that lets astronauts work efficiently for extended periods without fatigue.
URL: https://www.worldsolve.org/index.php?api=problem&id=156
We can't reliably predict solar flares before they disrupt satellites and power grids on Earth.
open
Global / Unspecified, Global
A severe solar storm could knock out satellites, GPS, and even electrical grids with little warning. Better prediction would give critical infrastructure time to prepare or shut down safely.
Citation ID: WS00155
Title: We can't reliably predict solar flares before they disrupt satellites and power grids on Earth.
URL: https://www.worldsolve.org/index.php?api=problem&id=155
We don't fully understand how magnetic fields form and behave inside planets like Earth.
open
Global / Unspecified, Global
Earth's magnetic field protects us from solar radiation, but the dynamo process that generates it deep underground is still only partly understood. This matters for predicting how long that protection will last.
Citation ID: WS00154
Title: We don't fully understand how magnetic fields form and behave inside planets like Earth.
URL: https://www.worldsolve.org/index.php?api=problem&id=154
We haven't built a telescope capable of directly imaging surface features on planets outside our solar system.
open
Global / Unspecified, Global
Right now we can only detect exoplanets indirectly, through shadows and wobbles in starlight. Direct imaging would let us actually study alien landscapes and atmospheres instead of just inferring their existence.
Citation ID: WS00153
Title: We haven't built a telescope capable of directly imaging surface features on planets outside our solar system.
URL: https://www.worldsolve.org/index.php?api=problem&id=153
We can't explain the exact mechanism that triggers a supernova in real time.
open
Global / Unspecified, Global
We understand the general physics of dying stars, but the precise trigger moment inside a collapsing star remains difficult to observe and model. Solving this would sharpen predictions about stellar life cycles across the universe.
Citation ID: WS00152
Title: We can't explain the exact mechanism that triggers a supernova in real time.
URL: https://www.worldsolve.org/index.php?api=problem&id=152
We haven't figured out how to build a permanent, self-sustaining base on the Moon.
open
Global / Unspecified, Global
Every lunar mission so far has been short-term, relying entirely on supplies brought from Earth. A base that grows its own food, recycles its own water, and generates its own power would prove long-term space settlement is possible.
Citation ID: WS00151
Title: We haven't figured out how to build a permanent, self-sustaining base on the Moon.
URL: https://www.worldsolve.org/index.php?api=problem&id=151
We don't know whether P equals NP, or whether some problems are fundamentally harder to solve than to check.
open
Global / Unspecified, Global
If P equaled NP, countless hard problems in logistics, cryptography, and optimization could be solved efficiently, but most computer scientists suspect they can't. This remains the most famous open question in computer science.
whether
problems
know
equals
some
mathematics-logic
Citation ID: WS01229
Title: We don't know whether P equals NP, or whether some problems are fundamentally harder to solve than to check.
URL: https://www.worldsolve.org/index.php?api=problem&id=1229
We haven't proven the Riemann Hypothesis, which predicts exactly where the building blocks of prime numbers hide.
open
Global / Unspecified, Global
This conjecture about the zeros of a specific complex function would, if proven, tighten our understanding of how primes are distributed among all integers. It's considered one of the most important unsolved problems in mathematics.
proven
haven
riemann
hypothesis
predicts
mathematics-logic
Citation ID: WS01230
Title: We haven't proven the Riemann Hypothesis, which predicts exactly where the building blocks of prime numbers hide.
URL: https://www.worldsolve.org/index.php?api=problem&id=1230
We still don't know if every mathematical statement that seems true can eventually be proven within a single consistent system.
open
Global / Unspecified, Global
Gödel's incompleteness theorems already showed some truths escape any fixed formal system, but the full boundary between provable and unprovable truths remains an active area of exploration. This shapes how we understand the limits of formal reasoning itself.
system
know
every
mathematical
statement
mathematics-logic
Citation ID: WS01231
Title: We still don't know if every mathematical statement that seems true can eventually be proven within a single consistent system.
URL: https://www.worldsolve.org/index.php?api=problem&id=1231
We haven't determined whether the number of solutions to certain simple equations in whole numbers is always finite or sometimes infinite.
open
Global / Unspecified, Global
Many Diophantine equations, which ask for whole-number solutions, resist any general method for predicting how many solutions exist. Solving specific cases has taken decades and earned major mathematical prizes.
solutions
number
equations
whole
haven
mathematics-logic
Citation ID: WS01232
Title: We haven't determined whether the number of solutions to certain simple equations in whole numbers is always finite or sometimes infinite.
URL: https://www.worldsolve.org/index.php?api=problem&id=1232
