Sensing is life, wireless sensor networks (WSN’s) are acquiring snowballing interests in research and industry, they are infiltrated in day-to-day use. A WSN encompasses spatially distributed autonomous sensors to monitor physical or environmental conditions, such as temperature, sound, pressure, etc. and to cooperatively pass their data through the network to a main station. WSN’s are bi-directional, as they receive sensory data and control sensor activities. The development of WSN’s was motivated by military applications such as battlefield surveillance; today such networks are used in many industrial and consumer applications, such as industrial process monitoring and control, robotics, health monitoring, smart buildings and homes, etc. Owing to their requirement of low device complexity as well as slight energy consumption, proprietary standards are devised to ensure impeccable communication and meaningful sensing. This talk takes care of enlightening the special features of WSNs and sheds light on their standards, analysis tools and diversified applications.