The present venture is an attempt to motivate and inspire young research workers actively engaged in the field of earth, atmosphere and planetary sciences. It would also cater to teachers, scientists and educated persons in other fields, who would find in this book a good deal of information about the possibility of extraterrestrial life taking the human civilization in the earth as a reference. In fact, keeping this purpose in mind the terrestrial lightning and transient luminous events in the earths environment have been elaborately presented in two chapters followed by a third chapter...