World Solve

Billions of people still lack any formal digital identity, cutting them off from banking, healthcare, and government services. A decentralized system could include everyone without handing control to one entity.

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.

Millions of applications depend on open-source code maintained by volunteers, and a single hidden change can spread unnoticed to countless systems. A trustworthy verification system remains a major unsolved need.

Cosmic radiation gradually damages electronics, and there's no way to send a repair technician to fix something millions of miles away. More radiation-hardy systems are essential for missions lasting a decade or more.

Larger asteroids are easier to spot years ahead, but smaller ones capable of serious regional damage often go undetected until they're very close. Expanding detection capability remains a quiet but serious safety gap.

The leading theory involves a massive collision with early Earth, but several details still don't perfectly match the evidence we've collected from lunar samples. A fuller explanation would clarify Earth's own early history too.

Living without normal gravity weakens astronauts' bones and muscles over time. Practical, affordable ways to simulate gravity in space stations remain mostly untested at scale.

Solar storms and radiation slowly degrade satellite electronics, shortening their working life and risking sudden failures. Better shielding could extend satellite lifespans and reduce costly replacements.

Detecting gravitational waves was a breakthrough, but modeling exactly what happens during these violent mergers pushes our computing power and physics equations to their limits.

Fast radio bursts flash briefly and then vanish, and we still don't fully understand what causes them. Some theories point to exotic stars, but no explanation is fully confirmed yet.

Every kilogram of fuel launched from Earth adds enormous cost to a mission. Producing fuel on-site from ice or soil could make deep space missions dramatically more affordable.

Low gravity and different light conditions slow plant growth and change nutrient uptake in ways we don't fully understand yet. Solving this is essential for any long-duration space mission that needs fresh food.

This mismatch is part of the evidence for dark matter, but the details of how it shapes galaxy rotation are still not fully worked out. A better model would sharpen our understanding of galaxy formation.

Current spacesuits are bulky, tiring, and limit fine motor movement, making long spacewalks physically exhausting. A more agile suit would make space construction and repair work far more practical.

A severe solar storm could knock out satellites, GPS, and even electrical grids with little warning. Better prediction would give critical infrastructure time to prepare or shut down safely.

Earth's magnetic field protects us from solar radiation, but the dynamo process that generates it deep underground is still only partly understood. This matters for predicting how long that protection will last.

Right now we can only detect exoplanets indirectly, through shadows and wobbles in starlight. Direct imaging would let us actually study alien landscapes and atmospheres instead of just inferring their existence.

We understand the general physics of dying stars, but the precise trigger moment inside a collapsing star remains difficult to observe and model. Solving this would sharpen predictions about stellar life cycles across the universe.

Every lunar mission so far has been short-term, relying entirely on supplies brought from Earth. A base that grows its own food, recycles its own water, and generates its own power would prove long-term space settlement is possible.

If P equaled NP, countless hard problems in logistics, cryptography, and optimization could be solved efficiently, but most computer scientists suspect they can't. This remains the most famous open question in computer science.