The world, as you know, is arranged in the most amazing way. On the pages of the 70 Facts series, you will find at least 70 reasons to remember this. New format: all scientific knowledge in 60 seconds! One reversal is one scientific fact. 70 amazing theories on a given topic. Due to the variety of topics and interesting presentation of information, the series will be interesting to the widest audience: from school-age readers to inquisitive adults.