World Solve

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.

Invasive plants can spread aggressively in protected parks and reserves, outcompeting native species even where conservation efforts are actively underway. Effective, affordable control methods that don't damage the broader ecosystem remain incomplete.

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.

Vultures help prevent disease spread by consuming carcasses quickly, but populations have declined sharply in various regions due to poisoning and habitat loss. Protecting this often-overlooked but ecologically important species remains an unresolved conservation issue.

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.

River dolphins are highly sensitive to pollution and habitat disruption, and several populations have declined sharply as rivers become more polluted and fragmented by development. Reversing this decline remains an unresolved conservation priority.

River deltas provide fertile land for millions of people but are increasingly eroding due to upstream dam construction and rising sea levels reducing natural sediment replenishment. Protecting these critical, densely populated areas remains an unresolved challenge.

Carbon capture technology can reduce emissions from heavy industry, but current costs remain too high for most companies to adopt voluntarily without strong regulatory or financial incentives. Making this technology genuinely affordable at scale remains unresolved.

Monarch butterflies depend on specific milkweed habitats along their long migration routes, and the loss of this habitat across multiple countries has contributed to sharp population declines. Coordinating protection across their entire migratory range remains unresolved.

Heavy metal contamination can persist in soil for decades, affecting both agricultural productivity and human health in nearby communities. Effective, affordable soil remediation at scale remains an unresolved environmental challenge.

Many cities' stormwater systems combine sewage and rainwater runoff, and heavy storms can cause this combined overflow to discharge untreated into nearby waterways. Fully separating and managing this runoff remains a costly, unresolved infrastructure challenge.

Grasslands store significant amounts of carbon in their soil and support unique biodiversity, but they continue to be converted to farmland at a pace that outstrips restoration efforts. Balancing agricultural needs with grassland conservation remains unresolved.

Freshwater mussels play an important role in filtering water and supporting aquatic ecosystems, but they're highly sensitive to pollution and warming, and many populations are declining as a result. Protecting this often overlooked species remains an unresolved conservation issue.

Conventional cotton farming uses significant water and pesticides, and while more sustainable methods exist, they remain a small share of overall global production. Scaling sustainable practices to become the industry norm remains unresolved.

As cities and suburbs expand, they often replace the wildflower meadows and natural habitats that pollinators depend on with lawns and pavement. Designing urban growth that preserves pollinator habitat remains inconsistently practiced.

Coastal wetlands serve as critical habitat for many bird species, but pollution and development continue to degrade these areas faster than protection efforts can offset. Reversing this decline remains an unresolved conservation priority.

Solar and wind farms are essential for clean energy but can sometimes be built in locations that disrupt sensitive wildlife habitats if siting isn't carefully planned. Balancing rapid renewable deployment with habitat protection remains an ongoing challenge.