John Hennessy III,
P.E.
By: Hank Chapot The 1890s popular movement for Good Roads, pushed most ardently by bicyclists,is of note for several reasons. Primarily the fight for better conditions for bicycling unknowingly set the stage for the rise of the private automobile. Within a decade of the big demonstrations detailed here, better roads and improved tire technology combined […]
View this complete post...These archival infra films show us how things used to be built, and how systems used to run.
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LATITUDE & NEXT AMERICAN CITY
In late 2010, Latitudeº asked 18 participants (10 from Boston, 8 from San Francisco) not to use their cars for one week. The vast majority of participants had ranked cars as their most necessary form of transportation, with the remainder using their cars at least weekly.
“San Francisco has always had a reputation as an environmentally conscious city, however it has set its sights on becoming the greenest city in the country by turning 100% sustainable by 2020. The plan was announced by outgoing Mayor Gavin Newsom, who last week launched an initiative to make the city fully ‘green’ within a decade.”
-Timon Singh, Inhabitat
Townsend Street’s new bike lanes are taking some getting used to.
-eviltoddx on YouTube
CROSSCURRENTS
Solar energy is the most widely available resource we have. Every hour, enough solar energy strikes Earth to meet human energy needs for more than a year, according to NASA. Now the solar industry is poised for huge growth in the United States, thanks to policy changes, incentives, technological improvements and economies of scale. Solar photovoltaics have recently become less expensive than nuclear energy on a per-kilowatt-hour basis, according to a new report from Duke University. Also, solar is widely expected to reach cost parity with fossil fuels in most markets by 2013.
“With more bridges being declared structurally deficient or obsolete, there is a need for immediate and novel engineering solutions in order to be well prepared for potential disasters and minimize future maintenance costs.”
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