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Biography

Mark Greenhalgh

Ph.D. · M.P.H. · Founder, Meridian

Epidemiologist and applied-technology researcher. Founder of Meridian and lead author across its programs and publications.

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A note on independence. This page describes Mark Greenhalgh’s professional background, including his federal employment. Meridian is operated independently of any federal duties and produces work that represents the views of the principal investigator alone. Federal roles are listed below for transparency; nothing on this page should be read as a federal communication or endorsement.

Summary

An epidemiologist and applied-technology researcher whose work sits at the intersection of public health, defense protection, and the institutions that organize global response to crisis.

Mark Greenhalgh holds a doctorate and a master of public health, with a working background in epidemiology and public health surveillance. His professional life has moved between three connected domains: epidemiology and public health, where the underlying training is grounded; defense and national security, where the operational application takes shape; and institutional analysis and writing, where the cross-cutting questions get worked out in public.

Meridian is the institutional expression of that work — founded on the premise that the technological discipline applied to projecting force can be applied, with equal seriousness, to protecting populations from the threats that have always done the most damage and received the least serious technological investment.

Education

  • Ph.D. — [discipline and institution to be added]
  • Master of Public Health (M.P.H.) — [institution to be added]
  • Undergraduate — [institution and field to be added]

Doctoral and graduate training in public health and epidemiology informs the methodology Meridian applies across its programs — particularly the surveillance work in Snow, the country-risk modeling in Marshall, and the analytical posture across Foresight.

Current Roles

Founder & Principal Investigator
Meridian
Founded and operates Meridian as an independent applied-technology and research institution focused on reducing the frequency, severity, and human cost of global risk. Lead author across its programs (Marshall, Snow, Cronkite, Pecora, Wargames Lab, Lemkin Framework) and publications (Foresight by Meridian, Wargames by Meridian).
Epidemiologist
U.S. Army Public Health Command Europe (USAREUR-AF) · Landstuhl, Germany
Federal civilian role in public health surveillance and epidemiology supporting U.S. Army operations across the European and African theaters. This federal employment is separate from Meridian. Meridian operates independently of these duties and represents the views of the principal investigator alone, not those of the U.S. Department of Defense, the Department of the Army, or any U.S. government agency or component.

Background & Training

Professional background combines epidemiology and public health surveillance methodology with operational experience in defense-adjacent settings. The intellectual through-line is the application of disciplined surveillance and analytical methodology to the threats that affect populations — pandemics, mass-casualty events, environmental disruption, and the institutional failures that compound them.

Specific experience and prior roles are detailed below as the page is populated. [Detailed work history, prior positions, and credentials to be added]

Publications & Writing

Public-facing analytical writing is published through Foresight by Meridian, the analytical voice of the institution. Seven essays have been published to date, covering subjects ranging from the post-9/11 evolution of executive emergency power to the contemporary crisis in Sudan, from European nuclear deterrence after the breakdown of Atlantic guarantees to the Anthropic-DoD confrontation over AI safety guardrails.

Academic and peer-reviewed publications — in epidemiology and public health — are listed separately. [Academic publication list to be added]

The book-length manuscript The Towers’ Echo: Legacies of the Global War on Terror is in active development. Selected chapters are being adapted into the Foresight serialization currently underway.

Areas of Interest

  • Public health surveillance & biosurveillance — the methodology and operational application of disease-detection systems, particularly for non-traditional and dual-use threat domains.
  • Country and regional risk modeling — the comparative measurement of national resilience across structural, institutional, environmental, and societal dimensions.
  • Information integrity and the epistemic environment — how generative AI is reshaping public information, and the institutional response required to preserve a navigable information commons.
  • Constitutional and institutional design — particularly the post-1945 institutional architecture that governs international response to crisis, and the conditions under which it holds or comes apart.
  • Capital allocation and global risk — the relationship between investment flows and the risks those flows create or mitigate.
  • The history and analysis of mass atrocity — the comparative study of why documented atrocities sometimes produce sustained civil society response and sometimes do not.
Get in Touch

For inquiries, collaboration, or correspondence.

For Meridian-related inquiries — institutional partnership, research collaboration, press, or speaking — the contact page is the right place to begin. Federal-employment-related inquiries should be directed through official channels and not through this site.

Contact Meridian  →

Meridian 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.