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A new study shows that medium-sized predators all but disappeared late in dinosaur historywherever Tyrannosaurus rex and its close relatives rose to dominance. In those areas—lands that eventually became central Asia and Western North America—juvenile tyrannosaurs stepped in to fill the missing ecological niche previously held by other carnivores.

Alicia Kollár standing next to a dilution refrigerator in her lab. (Credit: Alicia Kollár) JQI Fellow Alicia Kollár has received a prestigious Faculty Early Career Development (CAREER) award from the National Science Foundation (NSF) for a proposal aimed at developing a new window into the physics of particles interacting inside of materials and performing educational outreach. The award will provide $675,000 of funding over five years for her proposal titled “Engineering Interacting Photons in Superconducting-Circuit Lattices.”

Community Health Nurse Charlotte Wallace of Luminis Health talks to Joanne Long about the COVID-19 vaccine she’s about to receive at the Capitol Heights salon where Long is a regular client. Below, Long’s granddaughter, Jaelyn Moses (at left), and daughter, Chantell Long (center), talk to salon owner and community health advocate Katrina Randolph, a participant in UMD’s HAIR program.(Photos by Stephanie S. Cordle)