Data reference to a Digital Earth Reference Model (DERM) becomes ubiquitous facilitating distributed spatial queries such as “What is here?” and “What has changed?”.
Earth | model | Earth-616 | digital | Google Earth | Model (person) | Digital Equipment Corporation | Earth Day | America's Next Top Model | Digital Audio Broadcasting | Ford Model T | Friends of the Earth | From the Earth to the Moon | digital television | Cursed Earth | New Model Army | Earth, Wind & Fire | Digital data | Digital Millennium Copyright Act | Middle-earth | model (person) | digital download | Digital Spy | Digital rights management | Digital terrestrial television | From the Earth to the Moon (miniseries) | Model United Nations | Manfred Mann's Earth Band | The Day the Earth Stood Still | Sloan Digital Sky Survey |