Illustration Imagefot. James Martins / Creative Commons Attribution 3.0 Unported license
Poland is one of over 100 countries in which it has been celebrated annually since then - to remind of the main themes of that conference, like the civilisational development's compatibility with nature and ecology.
Radio Poland's Marcin Matuszewski has the details in his audio report - available in our player (red button above and on the left).
