In her spare time Tara communicates her science and work to a wide variety of audiences, through media, talks, on radio and film. In 2012 she became the first female professor of physics at Liverpool University. In this talk at TEDxArendal, she gives a glimpse into one of the largest mysteries in the universe – the unseen “dark matter”: what is it? Moreover; How do we find something we struggle to even measure? Particle physicist Dr Tara Shears is a researcher at the Large Hadron Collider (LHC) at CERN, the European centre for particle physics. Tara joined the LHC Beauty experiment at CERN’s Large Hadron Collider in 2004, where she started a program of electroweak physics – seeking answers as to why there is so little antimatter in the universe. She has performed many precise tests in particle physics theory, and her research program continues to this day. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx