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July 23, 2010

First-of-its-Kind Map Depicts Global Forest Heights

Using NASA satellite data, scientists have produced a first-of-its kind map that details the height of the world's forests. Although there are other local- and regional-scale forest canopy maps, the new map is the first that spans the entire globe based on one uniform method.

Tree Canopy Height Map

July 13, 2010

Atlas of Historical County Boundaries

Atlas of Historical County Boundaries now available online

The Newberry Library is pleased to announce the completion and release of its Digital Atlas of Historical County Boundaries, a dataset that covers every day-to-day change in the size, shape, location, name, organization, and attachment of each U.S. county and state from the creation of the first county in 1634 through 2000.

The data are organized by state and are available online in four versions:

* Viewable, interactive maps (electronic analogues to printed maps) on which the historical lines have been plotted against a background of the modern county network

* Downloadable shapefiles for use in geographic information systems (GIS)

* Downloadable KMZ files for use with Google Earth

* Downloadable and printable PDF files (each full-page frame shows a map of a different version of each county, with the historical boundaries displayed against a background of the modern county network)

July 8, 2010

Video game style 8-Bit Cities

8-Bit City -- City maps in the style of 1980s video games

July 2, 2010

Earth's gravity in high definition

Goce satellite views Earth's gravity in high definition

It is one of the most exquisite views we have ever had of the Earth.

This colourful new map traces the subtle but all pervasive influence the pull of gravity has across the globe.