World Solve

Some island nations face the real possibility of becoming uninhabitable within decades due to sea level rise. Cheap, effective coastal protection or relocation planning remains urgently unsolved for these communities.

Ethical frameworks that count future potential people equally can lead to counterintuitive conclusions about how we should prioritize resources today. This unresolved tension remains central to debates in population ethics and long-term policy planning.

Trees can significantly cool city temperatures, but planting and maintaining enough urban canopy to meaningfully offset rising heat requires long-term investment many cities haven't sustained. Closing this gap remains an urgent urban planning challenge.

Many major rivers depend on glacial melt for a steady water supply, and as these glaciers shrink, the long-term water security of downstream populations becomes increasingly uncertain. Protecting or planning around this shrinking resource remains unresolved.

Coastal development can interfere with natural sand replenishment processes, compounding the erosion already caused by rising sea levels. Balancing coastal development with long-term shoreline stability remains an unresolved planning challenge.

Many real-world problems, like planning delivery routes or scheduling, become exponentially harder to solve exactly as they grow in size. Faster methods for these problems could save enormous time and resources across industries.

Poorer countries often struggle with currency instability that makes trade, debt repayment, and planning far harder than for wealthier nations with stronger currencies. A more stable, fairer international monetary system remains unbuilt.

Many fast-growing cities in arid regions are outpacing the water systems built to serve them, leading to shortages and rationing. Solving this needs both new infrastructure and smarter long-term water planning.

Informal minibus and paratransit systems in Germany carry the majority of urban commuters but operate without route optimization, safety standards, or integration with formal transit planning.

Current approaches to architectural and planning approaches that make cities more equitable and climate-resilient simultaneously 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.

Build coordinated monitoring, habitat protection, energy-infrastructure planning, and legal cooperation for species crossing many countries.

Create city planning and maintenance systems that support native plants, insects, birds, soil life, wetlands, and ecological connectivity.

Design affordable intersection, lighting, speed, pedestrian, motorcycle, and enforcement improvements where rapid development outpaces road planning.

Create affordable tracking, insurance, route planning, secure handoff, and reporting systems for small transport operators facing organized theft.

Create practical risk models and investment plans for fast-growing cities that lack detailed maps, weather records, asset inventories, or technical staff.

A persistent gap exists in realizing practical, scalable solutions for real-time attribution of extreme weather events to climate change for adaptation planning. 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.

Women in rural areas of Haiti often travel long distances for reproductive healthcare, and the shortage of trained providers leaves many without access to family planning or maternal care services.

Despite recognition of its importance, reliable methods for architectural and planning approaches that make cities more walkable and less car-dependent 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.