World Solve

Addressing stigma around menstruation remaining is critical for achieving the 2030 Agenda. Current efforts fall short in scale, speed and equity, leaving the most vulnerable behind. Any viable solution must function in low-resource settings with limited specialists, transport, laboratory capacity and broadband. Proposals should specify quantifiable biological, social or environmental outcomes, openly discuss potential risks, and present a realistic pathway for long-term maintenance and local ownership beyond short research pilots.

Addressing stigma around disease continuing is critical for achieving the 2030 Agenda. Current efforts fall short in scale, speed and equity, leaving the most vulnerable behind. Any viable solution must function in low-resource settings with limited specialists, transport, laboratory capacity and broadband. Proposals should specify quantifiable biological, social or environmental outcomes, openly discuss potential risks, and present a realistic pathway for long-term maintenance and local ownership beyond short research pilots.

Random allocation of celebration days severs cultural and familial continuity around birth. The problem is preserving meaningful personal anniversaries while still allowing flexible scheduling for administrative or equity reasons.

Many agricultural and infrastructure systems are designed around historical seasons that may no longer exist. A useful solution must help governments revise calendars, reservoirs, insurance, crops, and public budgets under deep uncertainty. The solution must work with limited capital, intermittent services, and local maintenance capacity. 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.

Algorithms can adjust prices based on a shopper's data, sometimes leading to unfair or discriminatory pricing that isn't transparent to consumers. Meaningful transparency and regulation around this practice remain inconsistently enforced.

Recommendation systems tend to show users more of what they already agree with because that content performs better for engagement, gradually narrowing exposure to differing viewpoints. Correcting for this without reducing relevance remains an unresolved design challenge.

People increasingly turn to AI chatbots for guidance on legal or financial questions, but these systems can provide plausible-sounding yet incorrect advice with no clear warning of their limitations. Better safeguards around this kind of high-stakes advice remain underdeveloped.

Fuel spills, waste disposal, and legacy pollutants accumulate in soils, sediments, and biota near human activity. Systematic contamination surveys and remediation technologies are required.

South American economies grow around 2% per year on average, below global trends, making poverty reduction and fiscal sustainability difficult. Scenario-modelling tools and inclusive industrial-policy platforms can help governments design more resilient growth strategies.

Health systems built around infectious disease struggle to manage chronic conditions like diabetes and heart disease. Community-based screening and long-term management programs are needed.

Health systems built around infectious disease are not equipped for chronic care, and screening tools are scarce outside cities. Affordable point-of-care diagnostics and community health worker training could close the gap.

Plants grown in space suffer from water-logging and oxygen starvation around roots due to absence of buoyancy-driven convection. Developing autonomous micro-fluidic aeration root systems is essential for growing fresh crops in space.

Rigid aeroshells are constrained by rocket fairing diameters, limiting landed mass to around 1-2 metric tons. Deployable or inflatable aerodynamic decelerators are needed to land heavy human habitats safely.

Lung cancer screening guidelines are generally built around smoking history, but a meaningful share of cases occur in people who never smoked at all and often go undetected until later stages. Better screening approaches for this group remain underdeveloped.

Even where donation limits exist, wealthy donors can often find legal workarounds through political action groups or indirect spending. This keeps outsized influence in the hands of a few, regardless of formal campaign finance rules.

Workers and entire regional economies built around coal, oil, and gas face major disruption as the world shifts to cleaner energy. A fair, well-funded transition plan for these communities remains incomplete in most countries.

Enormous amounts of human knowledge and art remain physically locked inside buildings that most of the world's population will never get to visit in person. Making this content genuinely accessible remotely remains incomplete.

Old software often becomes unusable as operating systems and hardware change around it, forcing costly rewrites or abandonment. Designing for genuine long-term durability is rarely prioritized.

Scammers constantly find new ways around call-blocking systems, and phone networks still let large volumes of fraudulent calls through. A truly effective, adaptive solution remains elusive.

This is the famous Halting Problem, proven impossible to solve in full generality, yet many partial and practical questions around predicting program behavior remain actively studied. This shapes the theoretical limits of what computers can ever determine about themselves.