World Solve

Algal blooms can produce toxins that harm both wildlife and humans, and they're becoming more frequent as waters warm and nutrient pollution continues from agricultural runoff. Preventing these blooms before they form remains an unresolved challenge.

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.

Industrial chemicals can seep into groundwater and rivers used for drinking water, and cleanup once contamination occurs is often extremely difficult and expensive. Preventing contamination before it happens remains far more effective than remediation after the fact.

Wind turbine blades and other renewable energy components can be difficult and costly to recycle, creating a growing waste stream from an industry meant to be environmentally beneficial. Closing this lifecycle gap remains an unresolved sustainability challenge.

Salt and chemicals used to keep roads safe in winter can wash into nearby streams and lakes, harming aquatic life over time. Finding equally effective but less harmful alternatives remains an underaddressed environmental challenge.

Various seafood sustainability labels exist, but standards and enforcement vary enough between certifying bodies that consumers can't always trust what a label truly guarantees. Creating a single, reliable global standard remains unresolved.

A fungal disease combined with habitat destruction has driven sharp declines in amphibian populations across many regions, and effective large-scale intervention remains limited. Protecting these ecologically important species remains an unresolved conservation priority.

Some carbon offset programs have been found to overstate their actual climate benefit or allow the same emissions reduction to be claimed by multiple parties. Building a fully transparent, verifiable offset system remains an unresolved challenge.

Textile factories, especially in regions with weaker environmental regulation, often release dye chemicals directly into rivers, causing serious water pollution. Making this process clean and affordable at industrial scale remains an unresolved challenge.

Colony collapse disorder continues to threaten commercial and wild bee populations that are essential for pollinating much of the global food supply. A comprehensive solution addressing all contributing factors at once remains unresolved.

Bycatch, the unintentional capture of dolphins, sea turtles, and other non-target species in fishing gear, remains a significant driver of population decline for several marine species. Designing gear that fully prevents this remains technically unresolved.

Biodegradable packaging alternatives exist but often don't yet match the protective qualities of traditional plastic needed to keep food safe and fresh for the same duration. Closing this performance gap remains an unresolved materials science challenge.

Many e-waste recycling operations, particularly in lower-income countries, expose workers to toxic materials with inadequate safety protections. Making this growing industry both effective and safe for workers remains an unresolved labor and environmental issue.

Dams provide clean energy and water management benefits but can block the migration routes that many freshwater fish species depend on to reproduce. Designing infrastructure that serves both human and ecological needs remains an unresolved engineering challenge.

Aggressive logging can strip forest soil of the nutrients and structure it needs to regenerate tree cover, sometimes leading to long-term land degradation. Making logging practices consistently sustainable remains an unresolved global industry challenge.

As temperatures rise, mosquitoes and other disease-carrying insects are expanding into regions that were previously too cold for them to survive, introducing new health and ecological risks. Tracking and responding to this shift remains an unresolved public health and conservation challenge.

Many reforestation projects plant fast-growing single species rather than rebuilding complex, biodiverse forest ecosystems, which limits their true ecological value. Making these projects genuinely restorative rather than just visually green remains an unresolved challenge.

Larger plastic debris eventually breaks down into microplastics that are ingested by marine life and can work their way up the food chain to humans. Preventing this breakdown process or removing microplastics at scale remains technically unresolved.

Certification programs for sustainable palm oil exist, but enforcement gaps still allow rainforest clearing to continue for new plantations in various producing regions. Making sustainability certification genuinely effective at preventing this remains unresolved.