It is a great pleasure to welcome you to the 39th International Cosmic Ray Conference (ICRC 2025) in Geneva, Switzerland. The ICRC conferences are held biennially since 1947 by the Commission C4 ...

Patrick Koppenburg and Marco Pappagallo survey the 23 exotic hadrons discovered at the LHC so far. Twenty-three exotic states Five pentaquarks and 18 tetraquarks have been discovered so far at the LHC ...

Louis Lyons traces the origins of the “five sigma” criterion in particle physics, and asks whether it remains a relevant marker for claiming the discovery of new physics.

In the summer of 1968, while a visitor in CERN’s theory division, Gabriele Veneziano wrote a paper titled “Construction of a crossing-symmetric, Regge behaved amplitude for linearly-rising ...

André de Gouvêa explains why neutrino masses imply the existence of new fundamental fields. Misfits Massive neutrinos are not part of the Standard Model. Credit: Symmetry After all these years, ...

Oliver James of DNEG, which produced the striking black hole in the film Interstellar, describes the science behind visual effects and the challenges in this fast-growing industry. Gargantua A variant ...

A 100 km tunnel hosting a circular electron–positron Higgs and electroweak factory would pave the way for an energy-frontier hadron collider.

The heavy-ion physics programme at LHC Run 3 will provide deep insights into the rich field of QCD phenomenology.

SESAME founder Eliezer Rabinovici describes the story behind this beacon for peaceful international collaboration, what its achievements have been, and what the future holds.

An electron–positron Higgs factory following the LHC would significantly expand our knowledge about this unique and mysterious elementary scalar.

Technology originally developed for high-energy physics is being used to develop a novel medical linear accelerator for radiotherapy in low- and middle-income countries.

Frontier instruments like the LHC and its detectors not only push back the boundaries of our knowledge, but also catalyse innovative technology for medical applications, writes Manuela Cirilli.