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
Climate change and urban pumping changes may cause groundwater to enter basements, transit systems, utilities, and foundations. Cities need mapping, waterproofing, drainage, and financing strategies that address slow cumulative damage. The design must remain functional when standards, trade routes, data access, and diplomatic cooperation are unreliable. The research opportunity is to define measurable success criteria, test the approach in realistic settings, identify failure modes, and create a pathway from prototype to accountable deployment.
economics-resources
asia
india
climate-change
groundwater
adapting
underground
infrastructure
rising
under
geopolitical
fragmentation
climate
change
technology-computing
climate-environment
society-governance
systems
Groundwater extraction in surrounding agricultural zones causes subtle soil sinkage beneath critical transit corridors, requiring constant costly re-leveling.
climate-environment
asia
china
haven
stopped
industrial
land
subsidence
compromising
high-speed
rail
corridor
foundations
global-unspecified
philosophy-ethics
whether
agricultural
soil
open
Global / Unspecified, Global
Gödel's theorems already limit what's possible here for sufficiently powerful systems, but the full landscape of alternative systems and their limitations remains an active and unresolved area of mathematical logic. This continues to shape our understanding of the foundations of mathematics itself.
mathematics-logic
global-unspecified
possible
mathematical
haven
determined
whether
build
truly
complete
consistent
system
philosophy-ethics
resolved
know
every
open
Global / Unspecified, Global
Self-referential paradoxes have challenged logicians for over a century, and while specific paradoxes have been addressed with targeted fixes, no single unified framework has resolved every possible version. This unresolved tension remains central to the foundations of mathematical logic.
mathematics-logic
global-unspecified
resolved
every
possible
haven
whether
logical
paradox
fully
neutralized
some
philosophy-ethics
know
determine
open
Global / Unspecified, Global
While many algebraic structures have been classified, some corners of abstract algebra still lack a fully confirmed and complete classification of their most basic components. This ongoing effort shapes the foundations of modern algebraic research.
mathematics-logic
global-unspecified
fully
complete
algebra
haven
determined
whether
possible
construct
list
every
philosophy-ethics
resolved
know
mathematical
open
Global / Unspecified, Global
Formal proof systems capture enormous portions of mathematical reasoning, but whether a truly complete and finite rule set exists for absolutely every valid form of proof remains philosophically and technically unresolved. This touches the very foundations of what mathematics is capable of expressing.
mathematics-logic
global-unspecified
possible
proof
whether
complete
finite
set
every
valid
mathematical
haven
resolved
know
philosophy-ethics
open
Global / Unspecified, Global
Discrete mathematics, dealing with countable structures, and continuous mathematics, dealing with smooth changes, sometimes resist clean translation between one another, and a fully unifying framework remains an unresolved and ambitious mathematical goal. This touches the deepest foundations of how mathematics is structured.
mathematics-logic
global-unspecified
mathematics
mathematical
framework
fully
discrete
continuous
haven
determined
whether
possible
philosophy-ethics
resolved
know
every