SAR: A Versatile New Tool for Earth Science
Geoscientists are depending more and more on synthetic aperture radar's all-weather, day and night capability — using it to map digital topography, to study Earth as it moves and to detect and monitor floods, oil spills or storm damage as quickly as possible.
Rosalind T. Helz et al.
Snapshots from Space of the World's Continents
Mosaic images of entire continents can serve as benchmarks for monitoring global change.
Ahmed Mahmood et al.
LIDAR: Mapping a Shoreline by Laser Light
The days of collecting beach profile data solely in the field are gone. Now coastal geologists are looking to the skies, using a new radar tool to study changes to the shoreline over large areas.
James C. Gibeaut
Precision Agriculture: Changing the Face of Farming
Commercial farms around the world are changing, and remote sensing is beginning to play a large role. A new suite of technologies promises to help farmers better manage their crops at the scale of individual fields.
Doug Rickman et al.

November 26
Energy bill locked in Senate
November 21

Mercury transitions in the Everglades
November 14
Meeting updates: Particles on Mars and Earth
November 11
Evolution to stay in Texas texts
November 7
Remote mapping in disaster zones

Webextras Archive

Taking a trip? Check out Travels in Geology to find geologically significant places to visit.

News Notes
Tracing the Navajo sandstone
Tertiary is toast
Government peer review
Stuck between a rock and a cold place
Biosphere 2 bubble burst
Biblical tunnel timing
Turkish tectonics

New pursuit of near-Earth asteroids
Finding faults in Washington


Civilian Agencies Implement the Bush Space Policy
In April, President Bush authorized a national policy establishing guidance for federal use of commercial satellite data. Civilian agencies must now examine their needs.
Ralph J. Thompson

Political Scene
Our Public Lands
Managing public access and wilderness protection on federal lands is one of the most enduring policy-making challenges.
Larry Kennedy

Geologic Column
The Romance of Geology in Russia
In the 1960s, the Soviet Union was a vast expanse waiting to be explored. It was geologists who took the call, traveling to the farthest reaches of the country — inspiring a new generation of geological explorers.
Paul Belasky


Ed Roy: Thinking and Teaching in Texas

Energy & Resources
Alaska's latest development stir
Mineral Resource of the Month: Silicon

Check out this month's Energy Notes!

Fossils of the Florissant
Areal mapping applications
On the Web

Table of Contents
Letter from the Editor
Where on Earth?

This shaded-relief and color-coded topographic image shows a portion of Matagorda Island, Texas, off the coast of the Gulf of Mexico. Elevation data were acquired by the University of Texas at Austin with an airborne laser system, called LIDAR (light detection and ranging). Coastal geologists are beginning to use this system to map historical shoreline change. Read the story on tracking shoreline change. Image courtesy of James Gibeaut.

Coming Soon...
December: Global Mining and Sustainability

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