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
As climate disasters become more frequent, insurance premiums in high-risk areas are rising sharply or disappearing altogether, leaving residents financially exposed. A sustainable model for insuring these regions remains unresolved.
climate-environment
global-unspecified
insurance
regions
disasters
haven
found
way
make
affordable
facing
increasing
whether
philosophy-ethics
mathematics-logic
resolved
determine
open
Global / Unspecified, Global
Access to affordable business loans is heavily skewed toward people who already have assets or established credit, locking out many capable entrepreneurs. A fairer lending system remains an unresolved economic gap.
economics-resources
global-unspecified
business
lending
entrepreneurs
credit
yet
make
small
fair
accessible
existing
whether
philosophy-ethics
determine
resolved
don
way
open
Global / Unspecified, Global
Trade deals can boost overall economic growth while still leaving specific groups of workers worse off, often in the same country. A consistent, fair way to support those workers remains politically unresolved.
economics-resources
global-unspecified
fair
way
trade
don
have
compensate
people
whose
jobs
eliminated
philosophy-ethics
whether
resolved
determine
agreed
haven
open
Global / Unspecified, Global
Online spaces can accelerate radicalization by connecting isolated individuals with extremist content and communities faster than in the past. Effective, rights-respecting ways to counter this remain unresolved.
science-space
global-unspecified
extremist
online
communities
haven
found
way
prevent
ideologies
radicalizing
people
whether
philosophy-ethics
resolved
determine
mathematics-logic
open
Global / Unspecified, Global
Growing political division in many countries is making even routine governance decisions slower and more contentious than in the past. Rebuilding functional cooperation across political divides remains an unresolved societal challenge.
society-governance
global-unspecified
political
making
governance
stop
polarization
basic
compromise
increasingly
difficult
growing
philosophy-ethics
whether
public
haven
resolved
determine
open
Global / Unspecified, Global
Indigenous land rights are frequently overridden by governments or corporations pursuing resource extraction or development. Meaningful, enforceable control over ancestral land remains unresolved in many countries.
society-governance
global-unspecified
land
indigenous
meaningful
control
over
haven
solved
give
communities
decisions
philosophy-ethics
whether
climate-environment
mathematics-logic
economics-resources
technology-computing
open
Global / Unspecified, Global
Malnutrition during early childhood can cause lifelong developmental harm, and crises like war or drought regularly disrupt food access for vulnerable children. Building more resilient food delivery systems in crisis zones remains urgently unresolved.
health-biology
global-unspecified
childhood
malnutrition
drought
haven
solved
prevent
regions
affected
conflict
food
whether
philosophy-ethics
systems
way
mathematics-logic
society-governance
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
philosophy-ethics
whether
way
mathematics-logic
haven
open
Global / Unspecified, Global
Hiring tools, loan approval systems, and other automated decisions can unintentionally replicate historical biases present in their training data. Fully eliminating this bias while keeping systems useful remains unresolved.
technology-computing
global-unspecified
systems
bias
automated
haven
solved
prevent
algorithmic
creeping
decision
hiring
society-governance
whether
philosophy-ethics
mathematics-logic
resolved
climate-environment
open
Global / Unspecified, Global
Despite chess being fully deterministic with no hidden information, its complexity is so vast that no one has proven who truly holds the advantage under perfect play. Solving smaller games has offered clues, but full chess remains unresolved.
mathematics-logic
global-unspecified
chess
has
proven
haven
whether
principle
always
guaranteed
winning
drawing
philosophy-ethics
resolved
possible
know
every
mathematical
open
Global / Unspecified, Global
Some conjectures suggest that most true statements in sufficiently complex systems may have no short proof at all, only extremely long or even infinite ones. This unresolved question challenges our basic assumptions about what makes mathematics knowable.
mathematics-logic
global-unspecified
all
long
haven
proven
whether
almost
mathematical
truths
require
infinitely
philosophy-ethics
resolved
know
possible
every
open
Global / Unspecified, Global
Some sequences and structures appear chaotic without ever settling into repetition, and proving whether repetition is truly avoidable in specific systems remains unresolved. This connects deeply to dynamical systems and number theory.
mathematics-logic
global-unspecified
whether
don
know
every
sufficiently
well-behaved
mathematical
pattern
must
eventually
philosophy-ethics
resolved
haven
possible
systems
open
Global / Unspecified, Global
True randomness is difficult to define and even harder to prove, since any formula-based sequence is, by definition, predictable if you know the formula. This unresolved tension underlies debates in both mathematics and philosophy of probability.
mathematics-logic
global-unspecified
sequence
haven
determined
whether
possible
construct
truly
random
numbers
only
know
resolved
philosophy-ethics
every
mathematical
open
Global / Unspecified, Global
While the standard cube's maximum was determined through massive computation, generalized versions with more dimensions or larger sizes remain computationally and theoretically unresolved. This connects group theory with combinatorial optimization.
mathematics-logic
global-unspecified
dimensions
don
know
exact
largest
number
moves
required
solve
any
whether
haven
resolved
possible
every
philosophy-ethics
open
Global / Unspecified, Global
Some games are proven to always end in a draw or a specific winner under perfect play, but for many complex games, this remains unresolved due to sheer computational scale. This unsolved area touches game theory, logic, and computer science.
mathematics-logic
global-unspecified
proven
game
draw
haven
whether
every
possible
strategy
complete
information
resolved
philosophy-ethics
know
mathematical
open
Global / Unspecified, Global
Some mathematical truths may be true but fundamentally unprovable within any given formal system, a possibility raised by Gödel's work but not fully mapped out for all classes of statements. This unresolved boundary shapes the philosophy of computation.
technology-computing
global-unspecified
true
given
don
know
whether
every
statement
whole
numbers
eventually
philosophy-ethics
haven
resolved
mathematics-logic
possible
open
Global / Unspecified, Global
Sorting algorithms have been optimized extensively, but proving a true absolute lower bound across all possible sorting methods remains an unresolved question in computational theory. This affects the fundamental efficiency limits of computing.
technology-computing
global-unspecified
limits
haven
resolved
whether
number
steps
needed
sort
any
list
philosophy-ethics
know
mathematics-logic
possible
every
mathematical
open
Global / Unspecified, Global
Physical laws impose some theoretical limits on computation speed and energy use, but the exact universal boundary, if one truly exists, remains unresolved. This connects computer science directly to fundamental physics.
technology-computing
global-unspecified
physical
computer
haven
proven
whether
there
maximum
limit
efficiently
any
philosophy-ethics
mathematics-logic
resolved
know
possible
every
open
Global / Unspecified, Global
Irrational numbers have infinite, non-repeating digits, and while we can calculate them to enormous precision, no simple predictive pattern for their exact sequence has been found. This touches on deep unresolved questions in number theory.
mathematics-logic
global-unspecified
pattern
digits
irrational
numbers
haven
determined
whether
possible
find
predicting
know
resolved
philosophy-ethics
every
mathematical
open
Global / Unspecified, Global
The Continuum Hypothesis asks whether there's a size of infinity strictly between the countable and uncountable, and it has been shown to be independent of standard mathematical axioms. This unresolved question touches the very foundation of set theory.
mathematics-logic
global-unspecified
whether
set
size
mathematical
haven
resolved
every
infinite
numbers
must
know
philosophy-ethics
possible