People

We love what we do

From nuclear threats and terrorism to cyber attacks and climate change, the national security threats we face are too broad and complex for any one discipline to solve. In the National Security Sciences Directorate, we bring together diverse, multidisciplinary teams to focus ORNL’s resources and expertise on the biggest security challenges of our time. 

Whatever your academic or career background, there’s a path for you to contribute to meaningful national security missions.

Explore pathways to a career in national security science
National security scientist at work
National security scientist at work
Natiional security scientist at work
Natiional security scientist at work
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What we do matters

We’re modeling populations to protect them from resource scarcities and enable quicker responses when disaster strikes. 

We’re researching the threats to and from emerging AI systems to keep them — and us — safe from unintended consequences.

We’re developing technologies to track in real time the safety and security of nuclear materials in transit.

The national security missions we serve and the science-based solutions we provide will bolster our nation’s capabilities, strengthen our allies and partners, and ensure a prosperous global future.

Explore our missions and their global impact

Read about our people and their work

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Serving with Passion

It’s a passion. A calling to serve an important mission. Hear why our researchers come to work every day to deliver the science that secures the nation.

Tackling Big Challenges

Our people are tackling the biggest challenges in national security, often working behind the scenes.