sentences:  The scientific use of geo-browser virtual globes such as Google Earth, NASA's World Wind, and ESRI's ArcGIS Explorer has grown significantly as their functionality has improved and with the KML format having become the de facto standard for globe visualizations.Numerous examples can be viewed at the Google Earth Outreach Showcase and at the World Wind Java Demo Applications and Applets.Geosensors are defined as "...any device receiving and measuring environmental stimuli that can be geographically referenced."