The first day of the 21st Baikal JINR-ISU Summer School

The first day of the 21st Baikal JINR-ISU School organized by the Dzhelepov Laboratory of Nuclear Problems and Irkutsk State University is over. This year, we are constrained to organize this annual School online. Despite all the constraints, we have gathered about 30 students from several countries who are eager to listen to lectures on particle physics and astrophysical neutrinos and to give their own presentations. Looking forward to five more days of lectures, talks, and questions!