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
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
Despite extensive computation, no proof confirms whether these digits behave truly randomly forever or eventually reveal some hidden structure. This remains an open question bridging number theory and statistics.
mathematics-logic
global-unspecified
whether
digits
number
don
know
well-known
mathematical
constants
like
euler
haven
philosophy-ethics
resolved
possible
every
open
Global / Unspecified, Global
This problem, part of a broader family of questions in combinatorial geometry, has known bounds but no exact general formula for every configuration. Solving it would refine our understanding of how simple geometric constraints shape complex arrangements.
mathematics-logic
global-unspecified
exact
haven
determined
smallest
number
unit
distances
must
repeat
among
whether
know
possible
every
resolved
philosophy-ethics
open
Global / Unspecified, Global
Finding the shortest possible route through many locations becomes exponentially harder as the number of locations grows, and no efficient exact solution is known for all cases. This unresolved question sits at the heart of computational optimization theory.
mathematics-logic
global-unspecified
efficient
haven
determined
whether
there
way
solve
every
instance
traveling
know
possible
philosophy-ethics
resolved
mathematical
open
Global / Unspecified, Global
Some proofs are famously long and complex, and it remains unknown whether shorter, more elegant proofs must always exist in principle, even if we haven't yet found them. This unresolved question touches on both mathematics and the philosophy of mathematical elegance.
mathematics-logic
global-unspecified
haven
whether
always
shorter
mathematical
long
resolved
possible
find
simpler
philosophy-ethics
know
every
open
Global / Unspecified, Global
Gödel's theorems confirm this for many well-known systems, but whether every conceivable finite proof system inevitably faces this limitation remains an unresolved logical question. This continues to shape foundational research into the nature of formal systems.
mathematics-logic
global-unspecified
whether
every
finite
proof
system
haven
determined
mathematical
must
eventually
philosophy-ethics
resolved
know
possible
open
Global / Unspecified, Global
Emerging technologies might dramatically reduce suffering but also carry serious unknown risks, and it remains unresolved how to weigh potential benefit against potential harm. This tension underlies debates in bioethics and existential risk.
philosophy-ethics
global-unspecified
have
technologies
reduce
suffering
don
resolved
way
determine
whether
humans
agreed
know
open
Global / Unspecified, Global
Known as Goldbach's Conjecture, this simple-sounding statement has been checked for enormous numbers without exception, but never formally proven true for all numbers. It remains one of the oldest unsolved problems in mathematics.
mathematics-logic
global-unspecified
haven
solved
whether
every
even
number
greater
sum
primes
numbers
know
possible
philosophy-ethics
resolved
mathematical
open
Global / Unspecified, Global
Known as the P versus NP problem, this asks whether problems whose solutions are easy to verify are also easy to find in the first place. Answering it would reshape computer science, cryptography, and optimization overnight.
mathematics-logic
global-unspecified
easy
whether
also
don
know
every
math
check
solve
known
philosophy-ethics
haven
resolved
possible
Create rapid assessment, habitat protection, captive breeding, community stewardship, and funding models for species discovered in highly localized habitats.
local-regional
africa
madagascar
species
preventing
extinction
known
only
tiny
ranges
create
rapid
assessment
global-unspecified
philosophy-ethics
mathematics-logic
have
prevent
Vietnam sits along a known wildlife trafficking corridor, and enforcement agencies lack the forensic and tracking tools needed to intercept shipments and prosecute organized trafficking networks effectively.
economics-resources
asia
vietnam
trafficking
wildlife
curbing
illegal
routes
sits
along
known
corridor
global-unspecified
trade
have
philosophy-ethics
open
Chile, South America
Despite recognition of its importance, reliable methods for biotechnologies enabling the rapid development of vaccines against unknown future pathogens are still lacking. Progress is hindered by incomplete mechanistic knowledge, high capital and operational barriers, and the absence of deployment models suited to the contexts of greatest need.
health-biology
south-america
chile
biotechnologies
enabling
rapid
development
vaccines
against
unknown
future
pathogens
field-ready
climate-environment
systems
methods
society-governance
barriers