World Solve

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.

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.

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.

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.

As demand grows for minerals used in batteries and electronics, deep-sea mining is expanding into ecosystems that remain poorly understood and could take centuries to recover from disruption. Regulating this before major damage occurs remains an unresolved governance and environmental challenge.

Escaped farmed fish can compete with, interbreed with, or spread disease to native wild fish populations, threatening genetic diversity and long-term population health. Preventing these escapes and their ecological impact remains an unresolved aquaculture industry challenge.

Degraded peatlands release significant amounts of stored carbon, and restoring them to their natural, carbon-storing state requires careful, sustained management that many restoration projects don't achieve. Making this restoration reliably effective remains unresolved.

Fish introduced into new waterways for recreational or food purposes can sometimes outcompete or prey on native species, causing lasting ecological disruption. Preventing or reversing this kind of introduction remains an unresolved conservation challenge.

Coastal dunes provide a natural barrier against storm surges, but development and recreational use continue to erode them faster than they can naturally rebuild. Protecting these ecosystems remains an underappreciated but unresolved coastal resilience challenge.

Sustainable building materials often cost more or aren't as widely available as traditional concrete and steel, slowing their adoption across the construction industry. Making green materials the default rather than the premium choice remains unresolved.