Seminarium Teorii Oddziaływań Elementarnych

The 18th International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI 2014) was held at CERN in August. It focused on high energy hadron collisions of cosmic ray particles and related topics including all directions of very, and extremely, high energy cosmic ray studies with air showers. Highlights included the accelerator studies of hadronic interactions at very high energies and the interpretation of the cosmic ray data as well as the understanding of hadronic interactions from cosmic ray data. I will discuss the latest results from these studies including extensive air showers detected at TA, AUGER, TUNKA and IceCube.