Scientists are studying tiny subatomic particles that pass through humans and possess clues about the origins of the universe.

PNNL’s contributions over the last year span scientific discovery, sustainable energy and national security.

Twenty years after the first radiation portal monitor was installed, PNNL continues supporting the Department of Homeland Security’s efforts to detect and prevent terrorist weapons from crossing our borders.

COMPASS points to understanding nature’s transition zones—areas that can be dry land at times and under water at others.

Science and engineering solutions helping keep America safe from explosive, radiological, biological and cyber threats.

Understanding the Earth as a complex, dynamic system includes investigating what happens on, above and below its surface.

PNNL’s expertise is the foundation for monitoring technology that identifies trace amounts of radioactive materials and determines whether they are indicative of a nuclear explosion.

Peering through the thick, green glass of a decades-old "hot cell," an expert technician manipulates robotic arms to study highly radioactive waste from Hanford, in support of ongoing cleanup.

While some of us may periodically ponder the universe, most of us don't dedicate our lives to studying its mysteries, including its birth, evolution and fate.

Just reading the headlines makes it clear that these are anxious times.

Here at the Department of Energy's Pacific Northwest National Laboratory, much of our physics research focuses on fundamental scientific discovery and national security.