Roumyana Hadjiiska, from Bulgaria, is Head of the High Energy Physics Laboratory at the Institute for Nuclear Research and Nuclear Energy, part of the Bulgarian Academy of Sciences. She is also the Bulgarian representative to IPPOG and a member of the CMS experiment at CERN.

LHC World Wide Data Day (W2D2) is coming soon! This unique 24-hour global event invites high school students from around the world to become particle physicists for an entire day.

The International Cosmic Day is just around the corner!

On November 13, 2025, students, teachers, and scientists around the world are invited to explore cosmic particles together. In video calls, young researchers can exchange their results, and a drawing and selfie contest will challenge the creative minds.

This month, we meet Vojtěch Pleskot, particle physicist at Charles University in Prague and long-time member of the ATLAS experiment at CERN.

This month, we talk with Christine Kourkoumelis, IPPOG representative for Greece and Emeritus Professor of Experimental High Energy Physics at the National and Kapodistrian University of Athens.