Erik Pollock, a geoscientist at the U of A, is the lab manager of the University of Arkansas Stable Isotope Lab and the Trace Element and Radiogenic Isotope Lab.

Hundreds of millions of years before oxygen surged in the atmosphere 2.4 billion years ago, swaths of oxygen winked in and out of existence in the ocean.

Scientists have discovered the elusive properties hidden within promethium, a rare earth element that has remained largely ...

The skeletons of over 100 prehistoric rhinos have been found at Ashfall Fossil Beds in northeast Nebraska, but why were there ...

Volcanic eruption from 12 million years ago preserves a snapshot of extinct animal life. Rhinos that once roamed much of ...

Heavy actinides—elements at the bottom of the periodic table, after plutonium—are radioactive, rare and chemically complex, ...

Oxygen gas bound to iron in seawater ... satellite-based coral reef monitoring, Mars mineral analysis, and isotope data correction.

In collisions of argon and scandium atomic nuclei, scientists from the international NA61/SHINE experiment have observed a ...

About 12 million years ago, huge herds of rhinos roamed the lands of North America. There was a long-standing mystery around a fossil site in northeast Nebraska – Ashfall Fossil Beds State Historical ...

Seattle-based Interlune has won two contracts to sell thousands of liters of helium-3 excavated from the Moon’s surface and ...