"Have you ever dropped a stick in a river and wondered where it might go if it floated all the way downstream? Now you can trace its journey using Streamer." In addition to displaying the distance traveled, difference in elevation, and number of states, counties and cities the stick will pass through before reaching its outlet point, Streamer can do an upstream trace to show you which rivers and smaller streams fed into the spot where the stick was dropped. [more inside]
"The U.S. Geological Survey has just released more than 161,000 digitally scanned historical maps spanning in excess of 130 years and covering the lower 48 states. This Historical Topographic Map Collection provides a comprehensive repository of the landscape of our Nation..."
The United Stated Geological Survey has finished a six-year effort to map the surface of Jupiter's moon Io. [more inside]
NASA's MESSENGER team (previously: 1, 2, 3), with help from the U.S. Geological Survey, released yesterday the first global map of the planet Mercury. [more inside]
Native Names Projects by the Coeur d'Alene Tribe GIS Program and the Hawaii Board on Geographic Names are adding audio pronunciation guides to geospatial place-name datasets in several on-line mapping formats. [more inside]