National Geographic #'14/06: Hero Dogs - A Soldier's Best Friend

Dječje sveznanje 2: Reci šta je...

Zemlja - tajanstven planet

Sometimes, however, even scientists grope in the dark because the Earth does not easily reveal all its remaining secrets. Reality, as it often happens, is more exciting than any novel.

National Geographic Hrvatska #10: Biogoriva - Korisna ili ne?

Šta je teorija relativnosti? / Društvo i ličnost / Zašto sam za socijalizam?

National Geographic Hrvatska #12: Jesmo li sami?

Ekspedicije u nepoznato: historija velikih geografskih otkrića na našoj planeti

The work was originally published in 1959 and was awarded the first prize for the promotion of literature for children and young people in 1960 and has been translated into several languages. As a follow-up, Rackwitz wrote "Sunken Worlds - Far S