The Global Hydrology and Climate Center (GHCC) educates users about lightning and the techniques involved in their lightning and atmospheric electricity research at this website. To begin, users should visit the Lightning Primer, where they can discover the history of lightning research, the characteristics of storms, and types of lightning discharge, and the many methods used to study lightning. Students and educators can then explore the attributes of the Optical Transient Detector, the Lightning Mapper Sensor, the Lightning Imaging Sensor, and additional space-based sensors. Researchers can locate numerous lightning-related datasets and can learn about lightning campaigns and ground validation. This site is also reviewed in the May 27, 2005 _NSDL Physical Sciences Report_.