World Solve

Warming, acidification, migration, and food-web changes may make historical fishing quotas unreliable. Management systems must adapt quickly while protecting food security and the livelihoods of small-scale fishers. 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.

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.

Reflective surfaces that display a socially anticipated face rather than the actual one undermine personal identity and body autonomy. The problem is ensuring that basic self-viewing tools remain accurate and private rather than consensus-driven.

Smart textiles that adapt to and then lock in a wearer’s patterns can limit self-expression and create unwanted permanence. The challenge is designing garments that learn usefully without removing the wearer’s ability to change appearance or discard unwanted adaptations.

Achieving methods for restoring the health of soils degraded by salinization and contamination at meaningful scale demands simultaneous progress in fundamental research, engineering integration and socio-technical systems that work for low- and middle-income settings. Existing efforts remain fragmented relative to the magnitude of the challenge.

A persistent gap exists in realizing practical, scalable solutions for methods for restoring the carbon and biodiversity values of degraded peatlands and wetlands. 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.

Decades of aquaculture expansion destroyed vast mangrove ecosystems. Current restoration efforts suffer from low sapling survival rates and conflicts with commercial shrimp farming interests.

Newly planted young mangrove saplings are routinely washed away by increasingly intense storms before establishing deep root structures.

Osteoarthritis treatment currently focuses on managing pain and preserving remaining function rather than restoring lost cartilage. A regenerative treatment could transform care for one of the most common causes of chronic pain in older adults.

Wetlands filter water and protect against flooding, but restoring one once it's been drained or built over is far harder than protecting it in the first place. Better restoration techniques remain limited and expensive.

Modern prosthetic limbs can restore some movement, but most still can't let a person genuinely feel what they're touching. Restoring sensory feedback affordably remains a major unsolved bioengineering problem.

Vast areas of farmland worldwide have been degraded by decades of intensive use, and restoring their fertility can take years even with the right techniques. Scaling this restoration affordably remains an unresolved agricultural challenge.

Kelp forests support diverse marine ecosystems but are increasingly vulnerable to warming waters and invasive species that outcompete them once they weaken. Restoring and protecting these ecosystems at scale remains an unresolved conservation challenge.

Seagrass meadows are highly effective at storing carbon and supporting marine life, but they continue to decline due to pollution, dredging, and coastal development. Restoring them at a pace that matches their loss remains an unresolved challenge.

Degraded peatlands release significant amounts of stored carbon, and restoring them to their natural, carbon-storing state requires careful, sustained management that many restoration projects don't achieve. Making this restoration reliably effective remains unresolved.

Doubts about election security, counting errors, and manipulation persist in democracies around the world. Restoring full public trust in voting systems is essential for democracy to function as intended.

Once the spinal cord is severely damaged, current medicine offers little hope of restoring movement. Advances in nerve regeneration and brain-computer interfaces are promising but not yet a real cure.

The absence of robust, context-adapted solutions for methods for restoring the productivity and resilience of agricultural systems under climate change 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.

Current approaches to methods for restoring soil biodiversity and function after intensive conventional agriculture 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.

Current approaches to methods for restoring the ecological function of rivers fragmented by dams and infrastructure 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.