World Solve

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.

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.

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.

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.

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.

Invasive plant species can spread aggressively in forest understories, crowding out native plants that many forest animals depend on for food and habitat. Effective, scalable control of this lower-profile but significant ecological threat remains incomplete.

A large share of organic waste still ends up in landfills producing methane simply because industrial composting infrastructure isn't available in enough regions. Building this capacity out at the scale needed remains an unresolved waste management challenge.

Fraudulent scholarship offers generated to look authentic can convincingly target students seeking financial aid, extracting personal or banking information under false pretenses. Detection and public awareness campaigns remain inconsistently effective.

Laying physical fiber cable across mountains, deserts, or widely scattered rural populations is often prohibitively expensive relative to the number of people served. Finding cost-effective alternatives for these hard-to-reach areas remains unresolved.

Even devices marketed for outdoor visibility can become difficult to read in direct sunlight, limiting usability during many common outdoor activities. A fully effective, affordable anti-glare solution remains elusive.

Smart thermostats have improved efficiency, but many systems still require manual adjustment to truly optimize comfort without wasting energy throughout changing conditions. Fully automated, effective climate optimization remains an unresolved technical challenge.

Advanced filtration technology exists, but cost and infrastructure requirements keep effective solutions out of reach for many communities facing the most severe water contamination issues. Solving this affordability and deployment challenge remains urgent.

Effective air purification technology exists but often remains too expensive for widespread use in low-income housing, where indoor air pollution can be a serious health concern. Making this technology genuinely affordable remains an unresolved public health challenge.

As AI systems increasingly influence what billions of people see, believe, and decide, someone is effectively choosing the values baked into those systems. There's no agreed process for who that someone should be, or how they should be held accountable.

Millions of people with chronic pain are stuck choosing between inadequate relief or medications that carry serious addiction risk. A safer, equally effective alternative remains one of medicine's most requested breakthroughs.

Sustainable aviation fuel and electric planes exist in early forms but remain far more expensive than traditional jet fuel. Making clean flying both effective and affordable is still an open engineering and economic problem.

Farmers near protected reserves in Morocco suffer repeated crop and livestock losses to wildlife, and existing deterrents are either ineffective or too costly for widespread deployment, fueling retaliatory killings.

Current approaches to institutional designs that improve the effectiveness of multi-level climate governance 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.