World Solve

As climate disasters become more frequent, insurance premiums in high-risk areas are rising sharply or disappearing altogether, leaving residents financially exposed. A sustainable model for insuring these regions remains unresolved.

Sudden spikes in the price of staple commodities like wheat or rice can trigger food crises in import-dependent countries almost overnight. A more resilient global system to buffer these shocks remains unbuilt.

Aid money is sometimes available quickly after a disaster, but reaches affected people slowly due to administrative bottlenecks. Cutting this delay without sacrificing accountability remains a persistent logistical challenge.

People displaced by climate disasters often don't qualify for legal refugee status under current international law, leaving them without clear protection. A modern framework addressing this gap remains unbuilt.

Food allergy rates have been rising for decades, and the exact reasons behind this trend remain only partially understood. Understanding the cause could help prevent, not just manage, this growing health issue.

Artificial lighting confuses migration patterns, hunting behavior, and reproduction cycles in many nocturnal species, yet city lighting keeps expanding with growth. A widely adopted, wildlife-friendly lighting standard remains missing.

Cooling saves lives during extreme heat, but most air conditioners rely on energy sources and refrigerants that contribute to climate change. A low-emission cooling solution accessible to poorer regions remains urgently needed.

Rivers often flow through multiple countries, and disputes over how much water each country can use remain a persistent source of tension. A widely accepted, fair sharing framework remains unbuilt in many major river basins.

Older buildings often waste huge amounts of energy through poor insulation and outdated systems, but retrofitting them is usually expensive and disruptive. Cheaper retrofit solutions could unlock major emissions reductions from existing infrastructure.

Poor farming practices and deforestation are wearing away fertile topsoil faster than nature can rebuild it, threatening long-term food production. A scalable solution to reverse this trend remains unresolved globally.

As electric vehicles become more common, so will the used batteries, most of which still lack an efficient, complete recycling process. Solving this prevents a looming new wave of battery waste.

Wave energy is abundant and largely untapped, but current technology to harness it reliably and affordably lags far behind wind and solar. Cracking this could add a major renewable source to the global energy mix.

Many products marketed as biodegradable still break down into tiny plastic particles that persist in the environment for years. A truly safe, fully compostable packaging material remains elusive at scale.

In hot, dry climates, a significant portion of irrigation water is lost to evaporation before it ever reaches crop roots. Affordable ways to reduce this loss could ease water stress in agriculture-heavy dry regions.

Estimates of forest carbon storage vary significantly depending on the measurement method used, making it hard to track progress on climate goals tied to reforestation. More precise, consistent measurement remains an open challenge.

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.

Manufacturing solar panels currently involves energy-intensive processes and some toxic materials, undercutting part of their environmental benefit. A cleaner production process would make solar energy's benefits more complete.

Farms produce enormous amounts of leftover plant material that mostly gets burned or discarded rather than turned into usable energy. Affordable, small-scale conversion technology could turn this waste into a valuable resource.

Raising cattle and other livestock produces a significant share of global methane emissions, yet meat remains a major part of diets worldwide. A lower-emission farming method that doesn't require giving up meat entirely remains unsolved.

Plastic waste in the ocean is well documented, but pinpointing exact sources at a granular level remains difficult, making targeted prevention harder. Better tracking could focus cleanup and policy efforts where they matter most.