World Solve

Thousands of pieces of space junk are already circling the planet, threatening satellites and future missions. Left unresolved, orbit could become too cluttered and risky to safely launch into.

Some volcanoes give warning signs, but many erupt with little notice, putting nearby populations at serious risk. Better prediction could prevent mass casualties near active volcanoes worldwide.

Seismologists can identify risky zones but not the exact moment a quake will strike. A few minutes of reliable warning could save thousands of lives in earthquake-prone cities.

Farmers near protected reserves in Morocco suffer repeated crop and livestock losses to wildlife, and existing deterrents are either ineffective or too costly for widespread deployment, fueling retaliatory killings.

Despite recognition of its importance, reliable methods for teacher development platforms producing national-scale practice change are still lacking. Progress is hindered by incomplete mechanistic knowledge, high capital and operational barriers, and the absence of deployment models suited to the contexts of greatest need.

Despite recognition of its importance, reliable methods for methods for reducing the transmission of antimicrobial resistance through food and environmental pathways are still lacking. Progress is hindered by incomplete mechanistic knowledge, high capital and operational barriers, and the absence of deployment models suited to the contexts of greatest need.

Despite recognition of its importance, reliable methods for real-time systems for detecting and responding to food safety threats across supply chains are still lacking. Progress is hindered by incomplete mechanistic knowledge, high capital and operational barriers, and the absence of deployment models suited to the contexts of greatest need.

Current approaches to designs for digital identity and credential systems that protect privacy and prevent exclusion 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.

Despite recognition of its importance, reliable methods for circular economy systems that eliminate leakage of plastics into the environment are still lacking. Progress is hindered by incomplete mechanistic knowledge, high capital and operational barriers, and the absence of deployment models suited to the contexts of greatest need.

Despite recognition of its importance, reliable methods for institutional designs that reduce the influence of short-term interests on long-term policy are still lacking. Progress is hindered by incomplete mechanistic knowledge, high capital and operational barriers, and the absence of deployment models suited to the contexts of greatest need.

Despite recognition of its importance, reliable methods for symbiont-mediated coral heat tolerance enhancement protocols are still lacking. Progress is hindered by incomplete mechanistic knowledge, high capital and operational barriers, and the absence of deployment models suited to the contexts of greatest need.

Rural highways in Mexico experience disproportionately high fatality rates due to inconsistent road design standards, poor lighting, and insufficient emergency response infrastructure.

Despite recognition of its importance, reliable methods for solutions for providing safe and dignified housing for climate-displaced populations are still lacking. Progress is hindered by incomplete mechanistic knowledge, high capital and operational barriers, and the absence of deployment models suited to the contexts of greatest need.

The absence of robust, context-adapted solutions for nature-based solutions for flood risk reduction that also support biodiversity and livelihoods 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.

The absence of robust, context-adapted solutions for interventions that reduce the structural drivers of health inequities across populations 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.

Despite recognition of its importance, reliable methods for solutions for equitable access to high-quality secondary and tertiary education are still lacking. Progress is hindered by incomplete mechanistic knowledge, high capital and operational barriers, and the absence of deployment models suited to the contexts of greatest need.

Current approaches to interventions that reduce the transmission of vector-borne diseases under changing climate 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.

Despite recognition of its importance, reliable methods for solutions for managing the growing volumes of construction and demolition waste are still lacking. Progress is hindered by incomplete mechanistic knowledge, high capital and operational barriers, and the absence of deployment models suited to the contexts of greatest need.

Achieving institutional arrangements that reduce the risk of catastrophic accidents involving advanced technologies 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.

Land ownership records in Brazil remain largely paper-based and inconsistently maintained, fueling disputes, fraud, and insecurity of tenure that discourage long-term investment.