Rain is a natural process, from clouds to water as in the water-cycle. Rain moistens our world as if covering it with transparent layers. It shows the quality of the air that we breathe can affect our health and quality of life. Air conditions can also have a major impact on ecosystems and our climate change. It is therefore important to monitor air quality, in order to understand the problems and how they can be managed effectively, at local, national and international level.

I visited South Korea after there was devastating earthquake and nuclear power plant explosion in Japan, which is the nearest neighbouring country, in 2011. People were surrounded by fears of radiation rain and acid rain which might have come from Japan. As a result, many schools were temporarily closed because of a shower of complaints and intense anxiety. Groundless rumours were spread throughout the Asian countries while actually an extremely small amount of radioactivity was detected from rain in a particular area. I thought the fear would not have been as high if they had been able to check actual data easily by themselves, without depending on news or articles. This phenomenon led me to take a profound interest in rain and its impact. Especially I focused on acid rain and began researching its effects.