Why is snow white and cold? Can astronauts cry in their space suits? How many aliens are there in space? What exactly are black holes? How was the Sun created? What existed before the Big Bang? Where is the center of the Universe? What will be the end of the world? What is space made of?

Why is there life on Earth but not on Jupiter? How do images appear on the television screen? Can computers remember everything? What is life? Why do we grow and age, and why do we die? Why do we look like our mother? How did humans come to be?

Who invented speech and what purpose does spelling serve? Why do cats eat mice? Why can't dogs mate with cats? These and many other scientific questions were posed in letters to Uncle Albert by young readers of his books, and he responds with humor, completeness, and exceptional clarity, simultaneously introducing them to the wonders of modern science.

A book that should be common knowledge not only for all the children of our planet but also for adults.