Taxonomy term

infrastructure

Scientists map U.S. geoelectric hazards

During solar storms, electrons and protons collide with Earth’s atmosphere, disrupting the geomagnetic field and sometimes creating the flashing waves of colorful light in the night sky we know as auroras. But these same storms — if strong enough — have the potential to severely damage power grids.
 

19 Jan 2017

Earthquake-resilient pipes aim to keep L.A.'s water flowing

Southern California is notoriously dry, and the city of Los Angeles imports its water from Northern California. But there’s a potentially disastrous hurdle to cross: The San Andreas Fault runs just north of Los Angeles, slicing across all four of the major aqueducts that deliver water to the city. In the event of a major earthquake, water supplies to 4 million people could be cut altogether. The Los Angeles Department of Water and Power (LADWP) is working to disaster-proof the aqueducts as well as the 12,000 kilometers of pipelines that run throughout the city. A recent round of testing of a new type of earthquake-resilient pipeline at a specially designed laboratory at Cornell University is reassuring the LADWP that they’re on the right track.

08 Jan 2017

A L'Aquila trigger, seismic gaps and poor construction: What we've learned from the August earthquake in Italy

Seismologists examine what happened during the Aug. 24 earthquake in Rieti and discuss what those findings might mean for the future of this seismically active region. 
20 Nov 2016

Why is a gallon of gas cheaper than a gallon of milk?

The fundamental differences between milk and gasoline — shelf life and the scales of production, distribution and consumption — drive milk to cost more than gasoline.
07 Aug 2016

Comment: Weathering a perfect storm from space

Severe space-weather events have happened in the past, and they’ll happen again in the future. Will we be prepared?
 

 

15 Feb 2016

Benchmarks: December 10, 1930: Seattle’s Denny Hill disappears

Few cities in the United States can rival Seattle for the scale of reengineering to its landscape. Not only did its citizens make more than 890 hectares of new land in its harbor, but they also replumbed the city’s largest lake, completely changing its drainage pattern and drying up its main outlet, and regraded tens of millions of cubic meters of its hills. The most famous of these projects was the elimination of Denny Hill, a 73-meter-high hill that stood at the north end of Seattle’s central business district.
 
10 Dec 2015

Benchmarks: November 7, 1940, and November 25, 1990: Washington suffers a pair of debilitating bridge failures

Washington’s Puget Sound comprises an intricate network of rivers, lakes, inlets and islands, many of which are traversed by bridges that safely carry more than 100,000 cars each day. With November upon us, however, civil engineers and Department of Transportation officials in Washington must be holding their collective breath. Historically, the 11th month has not been kind to area bridges.
 
07 Nov 2011