September 1, 2011, 5am PDT
The amount of urban background noise is affecting the songs that birds sing to attract mates.
August 20, 2009, 5am PDT
A new report estimates that desertification will expand up to 34% during the next century, enveloping an area the size of the United States.
April 6, 2009, 9am PDT
France is hoping to establish a "darkness reserve" by regulating street lighting in towns and villages near a mountaintop observatory.
April 26, 2008, 1pm PDT
<p>New earthquake hazard maps from the U.S. Geological Survey show increased earthquake risk areas beyond typical hotspots like California. Geologists say planners and local officials should react to the maps by updating building codes.</p>
February 19, 2008, 8am PST
<p>A civil engineer has proposed a plan to create a "satellite" backup city of the Turkish metropolis of Instanbul -- a city precariously sited in a major earthquake area.</p>
September 11, 2007, 2pm PDT
<p>The city of Rome recently launched a dynamic mapping project that utilizes cell phones and GPS devices to display the city's flow of traffic and pedestrians on a publicly accessible website.</p>
September 2, 2007, 7am PDT
<p>High-tech traffic signals have been developed that predict and warn drivers of possible collisions.</p>
July 27, 2007, 7am PDT
<p>As governments consider more moon exploration, a space heritage archaeologist is calling on policy makers to think about how to protect historic sites on the moon -- such as the Tranquility Base landing site of the 1969 moon walk.</p>