Can you think of life without mobile phones or laptops anymore? How did our forefathers learn to use objects or tools? How did scientists figure out the universe and its cosmic secrets? What causes diseases and illnesses? How did people travel when locomotive engines were not invented? How were new islands discovered and who named them? Learning is made simpler with well-labelled diagrams and an extensive glossary of difficult words. Bonus: The books come loaded with Isn’ t It Amazing— a section of fun facts to keep you glued for more.