Meridian · Est. 2026
Meridian uses advanced technologies to mitigate global risks — through AI-driven tools, open-source intelligence, and structured analytical frameworks that reduce the frequency, severity, and human cost of systemic failure.
Technology is only as good as the purpose it serves.
The world's systems need not replacement, but refinement.
The world is not broken. It is under unprecedented strain. That distinction is everything.
Meridian is not built on optimism alone. It is built on the conviction that the right tool, applied at the right moment, in service of the right purpose, changes outcomes. That is not idealism. That is engineering applied to the human condition.
A drone that delivers insulin to a remote village and a drone that identifies a target are built from the same architecture. The variable is purpose. Meridian exists to ensure the purpose is worth building toward — reducing the frequency, severity, and human cost of global risk. Advanced technology is the instrument. Human welfare is the destination.
The institutions humanity built — the UN, NATO, Bretton Woods, public health infrastructure — were designed for a world that no longer fully exists. But the answer to institutional failure is not abandonment. It is redesign. Order is not the enemy of progress. Poorly calibrated order is. Meridian applies a Madisonian lens: human potential is best realized through well-designed structures, not despite them.
Broken implies irreparable. Strain, even unprecedented strain, implies a system that can be stabilized — a diagnosis that can be made, a treatment that can be administered. That distinction changes everything about what Meridian does. We are not critics of the world. We are diagnosticians. The capacity to recover exists. The question is whether the right instruments exist and are deployed in time.
When you are lost at sea — no landmarks, no horizon, nothing fixed — the meridian is the reference that tells you where you are. It does not move. It does not negotiate with the storm. It simply is, and because it is, you can find your way.
That is what Meridian does. In a world of compounding global risks, cascading institutional failures, and accelerating technological disruption, Meridian is the fixed bearing. Advanced technology as the instrument. Human welfare as the destination. The storm is real. The bearing holds.
Learn More →"Hobbes was right about human nature. Madison was right about what to do about it."
— Mark GreenhalghThe problems that matter most cluster into recognizable categories — from information integrity and infectious disease to armed conflict and climate disruption. Meridian addresses a focused subset, using the right tool for the right problem, and builds toward broader coverage as the institute grows. Active areas are highlighted.
Meridian was founded by Mark Greenhalgh — an epidemiologist whose public-health work has included operational disease surveillance for U.S. forces in Europe. His research focuses on the intersection of public-health surveillance, institutional design, and systemic global risk.
Meridian is his independent research and applied-technology company, operated entirely outside the scope of his official duties. All writing, tools, and analysis published under the Meridian name are his own.
More on the Institute →Research inquiries, advisory engagements, and press contact welcome.
Get in TouchMeridian is the independent research and applied-technology project of Mark Greenhalgh. Views, analysis, and materials published under the Meridian name are his own and do not represent the position of the U.S. Department of Defense, the Department of the Army, or any U.S. government agency or component. Meridian operates independently of his official duties.