"It's pretty incredible to think that some of the heavy elements all around us, like the precious metals in our phones and ...

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.

For the first time, astronomers have probed the physical environment of repeating X-ray outbursts near monster black holes ...