FOR WHAT? 1001 answer to the most important questions

Each person at least once asked questions about the world around him. Trying to find answers, people made many discoveries and invented many unusual things. Let's figure out why they needed it! Why do the Indians wear huge feathers on their heads? Why are huge skyscrapers erected in cities? Why did the profession of food tasting be needed? Why did people look for unknown islands and continents? Why do some doctors need not white, but green robes? Why did the astronauts need to be on the moon for almost a day? Why do pilots need to shave before the departure, and the guides of the train - pick up tickets from passengers? Why are earthlings interested in aliens from space and building colonies on Mars? Throughout the history of mankind, scientists of the world tried to unravel these and many other riddles. Now their knowledge is available to you: open this book - and not a single question will remain unanswered! For secondary school age.