In modern society, there are various risks most of which are invisible, hidden behind phenomena. In order to avoid or reduce any damage from the various hazards, individuals need to have enough knowledge on those risks, prepare for them and react properly when we meet them. To promote the proper scientific understanding and encourage people for preparation, science centres must play an important role in their communities. In this session, we will have presentations from several science centres on their activities on hazards and risks. Hazards can be categorised into three groups: natural disasters (earthquakes, tsunamis, volcanic eruptions, droughts, typhoons, and other violent climate); hazards created from interaction between natural disasters and human society (epidemics); hazards created by technologies (industry, transportation and conflagrations).Clues to understanding characteristics of these hazards and to preparing for possible future disasters will be discussed among panel members and the audience.