A top priority in climate research is obtaining broad-extent and long-term data to support analyses of historical patterns and trends, and for model development and evaluation. Along with directly measured climate data from the present and recent past, it is important to obtain estimates of long past climate variations spanning multiple centuries and millennia.Dendroclimatic Studies at the North American Tree Line presents an overview of the current state of dendroclimatol...

Around the world, SCADA (supervisory control and data acquisition) systems and other real-time process control networks run mission-critical infrastructure--everything from the power grid to water treatment, chemical manufacturing to transportation. These networks are at increasing risk due to the move from proprietary systems to more standard platforms and protocols and the interconnection to other networks. Because there has been limited attention paid to security, these systems are seen...