World Solve

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.

Early detection dramatically improves skin cancer survival rates, but many people lack easy access to dermatology screening. A cheap, widely available detection tool could catch far more cases before they become dangerous.

Many countries are seeing their elderly populations grow faster than their caregiving systems can support, straining families and healthcare systems alike. A scalable, affordable model for elder care remains an unmet need almost everywhere.

Existing dementia treatments offer only modest, temporary relief from symptoms rather than meaningfully slowing the underlying disease. A real disease-modifying treatment remains one of medicine's most sought-after breakthroughs.

Genetic testing can reveal risk for serious inherited conditions, but cost and access limit it mostly to wealthier patients and countries. Broader affordability could catch preventable conditions far earlier for many more people.

Blood donation shortages remain a recurring problem worldwide, especially during emergencies when demand spikes suddenly. Lab-grown blood could remove dependence on donor supply entirely, but the technology isn't yet practical at scale.

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.

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.

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.

Coding education often depends on expensive devices, reliable internet, and trained teachers, none of which are guaranteed in poorer school systems. Closing this gap could open technology careers to far more young people.

Modern prosthetic limbs can restore some movement, but most still can't let a person genuinely feel what they're touching. Restoring sensory feedback affordably remains a major unsolved bioengineering problem.

Early brain-computer interfaces show promise for people with paralysis, but they remain expensive, invasive, or unreliable outside controlled lab settings. Making them practical for everyday use is still unsolved.

Games involving bluffing or incomplete knowledge, like certain card games, resist the same clean mathematical solutions available for games of complete information. This unresolved question remains central to advanced game theory research.

The three-body problem famously resists the same clean, closed-form solutions available for two-body systems, and general long-term predictability for all such systems remains incompletely understood. This unresolved question connects pure mathematics directly to astrophysics.

People often prefer clear narratives and resolution, even when it means adopting interpretations that aren't fully supported by the actual evidence available. This unresolved tension touches on both personal psychology and the broader ethics of belief formation.

Being emotionally available to others is often seen as a virtue, but constant availability can come at a real cost to a person's own wellbeing and boundaries. This unresolved tension shapes debates over compassion fatigue and the limits of caregiving.

Deforestation and rising temperatures are pushing parts of the Amazon toward a state where it can no longer sustain itself as rainforest. Preventing this shift before it becomes irreversible remains an urgent, unresolved challenge.

Invasive plants and animals introduced by global trade and travel can outcompete native species, sometimes causing lasting ecological damage before anyone intervenes. Effective, scalable methods for controlling their spread remain incomplete.

Even legally protected forests are frequently logged illegally due to weak enforcement and high demand for timber, undermining conservation efforts on paper. Stopping this in practice, not just in law, remains an unresolved global challenge.