World Solve

Sea-level rise and extreme rainfall threaten settlements and infrastructure. Climate-risk mapping and relocation-planning tools can guide adaptation.

Extreme events cause health impacts and infrastructure damage, testing adaptation plans. Urban heat and flood-risk modelling tools plus nature-based solution marketplaces can support responses.

General relativity and quantum field theory conflict at extreme densities, such as inside black holes and at the Big Bang. Progress in string theory, loop quantum gravity, and holographic dualities could lead to a consistent framework.

Their equation of state depends on poorly constrained nuclear physics at extreme densities. Multi-messenger observations of mergers and precise timing can narrow possibilities.

Formation flying for interferometry demands extreme precision. Advances in control theory and sensor technology are needed.

Economic growth has not been inclusive enough, leaving large groups in informal, low-paying work without safety nets. Targeted cash transfers and universal basic social protection floors could reduce extreme poverty.

Wheelchairs, hearing aids, and screen readers are often unaffordable or unavailable, restricting mobility and employment. Local manufacturing and inclusive design startups could expand access.

Out-of-pocket medical expenses remain extremely high in countries without universal coverage, forcing families to sell assets during health crises. Affordable micro-health-insurance products could reduce this financial shock.

Farmers and small traders often turn to predatory informal lenders charging extremely high interest rates due to lack of formal alternatives. Digital microfinance platforms with fair rates could displace exploitative lending.

Rising temperatures combined with high humidity are pushing some regions toward conditions where outdoor work becomes dangerous. Heat-early-warning systems and outdoor worker protection policies need urgent development.

Oral health is often neglected in public health systems, leading to preventable pain and infection that affects nutrition and productivity. Mobile dental clinics and community oral-health education programs could improve outcomes.

High tariffs, poor logistics, and inconsistent standards mean African countries often import food from overseas instead of neighbors. Digital trade platforms aligned with the African Continental Free Trade Area could unlock this market.

Many African countries lack the weather stations and forecasting capacity to warn communities ahead of droughts or floods. Low-cost automated weather stations and mobile alert systems could save lives and crops.

Lack of accessible infrastructure and negative social attitudes exclude many people with disabilities from education and employment. Affordable assistive-technology startups and inclusive-design mandates could improve access.

Transporting fuel and life support reagents from Earth is economically non-viable for sustained settlements. We need robust robotic systems capable of excavating, purifying, and processing icy regolith under extreme thermal conditions.

Radio communication links offer extremely limited bandwidth for high-definition scientific data streams from deep space. Developing ultra-precise laser beam stabilization near the Sun is essential for high-rate planetary telemetry.

FRBs unleash as much energy in milliseconds as the Sun emits in days, yet their origins—whether magnetars or exotic energetic events—are unconfirmed. Resolving this will yield new insights into extreme astrophysics and cosmic plasma.

To achieve high efficiency, nuclear thermal engines must run hydrogen propellant at temperatures over 2,500 K, which corrodes reactor cores. Development of advanced ultra-high-temperature carbide and nitride nuclear ceramics is vital.

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.

Standard lithium-ion batteries lose efficiency and fail at sub-zero temperatures without dedicated thermal heaters. Development of solid-state or low-temperature tolerant electrolyte batteries is essential for planetary night survival.