By presenting a few selected examples, János Szépvölgyi Professor emeritus delved into topics such as the issues of that may appear during energy production and use. Through this topic, they embark on a journey of knowledge, with particular regard to renewable sources and environmental effects. Another issue was the arising problems developed from the finite supplies of raw materials. Prioritising the definition of different possibilities for recycling and material substitution. Lastly, how reducing the environmental burden from waste generation: processing options and circular economy was also a topic for discussion.
