THe book introduces the subject of indoor radon measurement. The book gives an account of the reasons for measuring radon in indoor spaces, highlighting the danger of high exposure to radon resulting in lung cancer. The book also cover the remedies and how to build radon resistant homes and working spaces. The book also has an international perspective and draws from case studioes from around the world. Acadaemic work is also referenced on the book to give an authentic account of the findings of its measurements from different parts of the world. The book is simple enough for readers who need an introduction to radon measurement but it also has sufficient depth to equip a researcher on the measurment techniques required at higher levels.