Tara Shears is a particle physicist and Reader at the University of Liverpool. She has spent her career exploring the smallest constituents of the universe with the aid of some of the largest pieces of scientific equipment ever constructed. After earning her PhD at Cambridge University, Tara spent time researching at CERN near Geneva and Fermilab in Chicago. She returned to CERN where she now carries out research at the Large Hadron Collider (LHC). As part of the LHCb experiment, she is investigating the mystery of why there is so little antimatter found in the universe today, an observation which has profound consequences for explaining the evolution of the universe and which is one of the biggest mysteries in particle physics.