World Solve

Data breaches exposing millions of passwords happen with striking regularity, despite widespread awareness of the problem. A more fundamentally secure approach to authentication is still needed.

Search results are ranked mostly by popularity and relevance signals, not by actual accuracy, letting false but engaging content rise to the top. A better system needs to weigh truthfulness, not just engagement.

Scammers constantly find new ways around call-blocking systems, and phone networks still let large volumes of fraudulent calls through. A truly effective, adaptive solution remains elusive.

This question, closely related to the once-open Poincaré Conjecture, has been resolved in three dimensions but opens further mysteries in higher-dimensional analogues. Exploring these generalizations remains an active area of topology.

The famous four-color theorem was resolved for flat maps, but generalizing the problem to more complex or higher-dimensional surfaces remains unsettled in several cases. This continues to be explored in graph theory and topology.

This is the famous Halting Problem, proven impossible to solve in full generality, yet many partial and practical questions around predicting program behavior remain actively studied. This shapes the theoretical limits of what computers can ever determine about themselves.

Parts of the Greenland ice sheet may have already crossed tipping points where melting continues regardless of future emissions cuts. Understanding and potentially slowing this process remains one of climate science's most urgent unresolved challenges.

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.

Vast stretches of ocean lie beyond any single nation's jurisdiction, making it difficult to monitor and stop illegal fishing that depletes fish populations faster than they can recover. Closing this enforcement gap remains an unresolved challenge.

As oceans absorb more carbon dioxide from the atmosphere, they become more acidic in ways that threaten shellfish, coral, and the broader marine food chain. Reversing or even halting this chemical shift remains beyond current technology.

Migratory birds depend on a chain of habitats across multiple countries, and losing even one critical stopover point can threaten an entire species' survival. Coordinating protection across this many jurisdictions remains an unresolved conservation challenge.

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.

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.

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.

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.

Battery life claims often assume light use, and demanding tasks like video editing or gaming can drain a laptop's battery in just a few hours. Meaningfully extending battery life under heavy real-world use remains an unresolved hardware challenge.

Illegal wildlife trade pushes species toward extinction while operating largely undetected across international borders. A more coordinated global tracking system could catch this trade before, not after, populations collapse.

Wars, droughts, and shipping disruptions can send food prices soaring almost overnight, hitting poorer households hardest. A more resilient global food system could soften these shocks before they cause real hunger.

Despite regulation added after every major crash, financial systems keep finding new ways to become unstable. We still don't have a reliable way to prevent the next one before it happens.

Criminal networks move money, goods, and people across borders quickly, while law enforcement cooperation between countries is often slow and limited. Closing this gap requires faster, more trusted international coordination.