This book includes essential concepts in the application of remote sensing. Remote sensing has majorly profited almost all areas of human activity and development by providing a common platform to physical, natural and social activities for interaction and advancement. This book discusses the impacts of remote sensing on various areas of science, human activity and technology by presenting a selected number of high quality contributions related to various remote sensing applications organized under sections namely, Remote Sensing in Oceans & Cryosphere and Human Activity Assessment. The book includes contributions of prominent experts and researchers, who possess vast knowledge and years of experience in this field.