Karmela Padavic-Callaghan is a scientist, a journalist, and an educator based in New York City. A staff writer at New Scientist, they report on physics, materials science, and quantum technology. They hold a PhD in theoretical condensed matter physics and atomic, molecular and optical physics from the University of Illinois Urbana-Champaign. Their research has been published in peer-reviewed journals, including Physical Review Letters and New Journal of Physics. Their popular science writing has been featured in such publications as Wired, Scientific American, Aeon, Slate, and MIT Technology Review.