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
Shipping structural habitat materials from Earth is cost-prohibitive. We must develop 3D-sintering or concrete binder technologies that use local soil to withstand vacuum pressure and severe thermal cycling.
climate-environment
global-unspecified
have
proven
way
construct
durable
air-tight
habitats
out
raw
lunar
whether
philosophy-ethics
resolved
don
determine
agreed
open
Global / Unspecified, Global
Missions passing from the inner solar system to the deep outer cold face severe thermal swings that degrade instruments. Variable emissivity smart materials and active thermal fluid loops are needed.
climate-environment
global-unspecified
thermal
active
interplanetary
spacecraft
lack
lightweight
control
systems
extreme
environments
science-space
long
storage
whether
materials
designs
open
Global / Unspecified, Global
Micrometeorite punctures or radiation micro-cracking can cause catastrophic slow pressure leaks in space habitats. Elastomeric polymers embedded with self-healing microcapsules need to be validated in orbit.
science-space
global-unspecified
self-healing
space
lack
autonomous
materials
inflatable
habitat
walls
micrometeorite
punctures
whether
philosophy-ethics
know
systems
fully
mathematics-logic
open
Global / Unspecified, Global
Many products marketed as biodegradable still break down into tiny plastic particles that persist in the environment for years. A truly safe, fully compostable packaging material remains elusive at scale.
climate-environment
global-unspecified
packaging
fully
yet
build
materials
decompose
safely
leaving
microplastics
behind
whether
philosophy-ethics
mathematics-logic
haven
resolved
health-biology
open
Global / Unspecified, Global
Manufacturing solar panels currently involves energy-intensive processes and some toxic materials, undercutting part of their environmental benefit. A cleaner production process would make solar energy's benefits more complete.
climate-environment
global-unspecified
solar
make
production
haven
found
way
panel
itself
fully
environmentally
mathematics-logic
whether
philosophy-ethics
local
open
Global / Unspecified, Global
Biodegradable packaging alternatives exist but often don't yet match the protective qualities of traditional plastic needed to keep food safe and fresh for the same duration. Closing this performance gap remains an unresolved materials science challenge.
climate-environment
global-unspecified
plastic
packaging
biodegradable
food
haven
found
way
make
fully
compromising
whether
philosophy-ethics
mathematics-logic
resolved
determine
don
open
Global / Unspecified, Global
Many e-waste recycling operations, particularly in lower-income countries, expose workers to toxic materials with inadequate safety protections. Making this growing industry both effective and safe for workers remains an unresolved labor and environmental issue.
climate-environment
global-unspecified
workers
recycling
safe
materials
haven
solved
make
electronic
waste
facilities
whether
philosophy-ethics
economics-resources
mathematics-logic
open
Global / Unspecified, Global
Sustainable building materials often cost more or aren't as widely available as traditional concrete and steel, slowing their adoption across the construction industry. Making green materials the default rather than the premium choice remains unresolved.
climate-environment
global-unspecified
materials
green
building
available
traditional
haven
solved
make
affordable
carbon-intensive
mathematics-logic
whether
philosophy-ethics
way
reuse
open
Global / Unspecified, Global
Certain rare minerals essential for chip production are concentrated in regions with political instability or poor labor practices, creating both ethical and supply chain risks. Finding viable alternatives or more responsible sourcing remains unresolved.
philosophy-ethics
global-unspecified
supply-chain
regions
don
have
way
manufacture
computer
chips
relying
materials
mined
whether
determine
resolved
agreed
mathematics-logic
open
Global / Unspecified, Global
Recycling facilities still rely heavily on human sorters because robotic systems struggle to reliably distinguish between similar-looking but differently recyclable materials. Improving this accuracy could significantly increase recycling efficiency worldwide.
climate-environment
global-unspecified
recycling
haven
solved
build
robotics
capable
sorting
complex
mixed
streams
systems
waste
economics-resources
management
materials
philosophy-ethics
open
Global / Unspecified, Global
Extracting the metals needed for electric vehicle batteries often involves environmentally damaging mining practices, undermining some of the environmental benefits electric vehicles are meant to provide. Finding cleaner extraction or alternative materials remains an unresolved sustainability challenge.
climate-environment
global-unspecified
electric
vehicle
environmentally
mining
practices
haven
solved
make
battery
production
philosophy-ethics
whether
mathematics-logic
way
resolved
open
Global / Unspecified, Global
Old phones, laptops, and batteries pile up in landfills, leaking toxic materials while valuable metals inside go to waste. A cheap, safe recycling process could turn a growing pollution problem into a resource stream.
climate-environment
global-unspecified
waste
haven
figured
out
recycle
electronic
cheaply
safely
scale
old
recycling
systems
management
plastic
growing
whether
A persistent gap exists in realizing practical, scalable solutions for materials enabling efficient and durable electrochemical synthesis of ammonia and fuels. Scientific understanding, engineering readiness and institutional capacity remain insufficient to translate promising concepts into durable impact under real-world constraints of cost, skills and governance.
society-governance
africa
dr-congo
durable
materials
enabling
efficient
electrochemical
synthesis
ammonia
fuels
overcoming
barriers
solutions
systems
technologies
methods
scalable
Current approaches to technologies for the selective recovery of valuable materials from complex waste streams either underperform under variable field conditions or generate externalities that undermine long-term sustainability and equity. Closing the gap requires coordinated advances in science, systems design and enabling institutions.
climate-environment
europe
greece
enabling
technologies
selective
recovery
valuable
materials
complex
waste
streams
robust
society-governance
systems
methods
approaches
solutions
open
Solomon Islands, Oceania
Current approaches to biotechnologies enabling the production of high-value materials from captured carbon dioxide either underperform under variable field conditions or generate externalities that undermine long-term sustainability and equity. Closing the gap requires coordinated advances in science, systems design and enabling institutions.
climate-environment
oceania
solomon-islands
enabling
biotechnologies
production
high-value
materials
captured
carbon
dioxide
systemic
solutions
society-governance
systems
approaches
technologies
methods
Develop affordable, durable coatings, roofs, walls, and textiles that reduce indoor heat without high energy use or toxic material tradeoffs.
economics-resources
asia
india
heat
robust
materials
passive
cooling
extreme
develop
affordable
durable
coatings
society-governance
climate-environment
systems
designs
high
Develop drainage, runway materials, power backup, communications, and financing approaches for airports essential to island connectivity and disaster response.
climate-environment
oceania
samoa
island
climate-resilient
airport
infrastructure
small
states
develop
drainage
runway
materials
communities
remote
economics-resources
public
society-governance
Develop materials, inspection methods, protective coatings, financing, and maintenance plans for roads, ports, bridges, and water systems exposed to salt and humidity.
economics-resources
asia
philippines
preventing
corrosion
coastal
public
infrastructure
develop
materials
inspection
methods
protective
society-governance
systems
climate-environment
safe
water
Create systems to track quality, environmental impact, labor conditions, and price integrity for sand, cement, steel, timber, and aggregates.
climate-environment
asia
india
transparent
sourcing
construction
materials
public
projects
create
systems
track
quality
society-governance
across
without
quantum
governance
The absence of robust, context-adapted solutions for biotechnologies for producing high-performance materials from renewable feedstocks creates cascading risks across interconnected human and natural systems. Key missing elements include durable performance, low lifetime cost, and governance arrangements capable of sustaining impact beyond pilot stages.
society-governance
oceania
fiji
biotechnologies
producing
high-performance
materials
renewable
feedstocks
practical
realization
absence
robust
solutions
systems
climate-environment
enabling
methods