VARIATIONS OF RADON FLUX DENSITY IN KARST CAVES AND SOLAR ACTIVITY

I welcome all participants of the scientific forum "Radiation Safety in the Modem World"The security situation in the world is surprisingly not stable in the 21 st century and the humanity is exposed to unexpected challenges that affect each of us.Chemical and radioactive substances are wonderful helpers and a great result of human progress.Although they are supportive, on the other hand, they can be very dangerous, in the event of accidents or deliberate misuse.Therefore, it is very important to organize conferences of this type, where we, scientists, can participate in promoting world security and safety.