Engineering
Top stories summarized by our editors
6/22/2017

The Coast Guard is exploring whether commercially available diesel outboard motors for some of its smaller craft would allow it to convert to just one type of fuel for its entire fleet. Possible advantages are seen in fuel contracts, logistics, storage, maintenance and training.

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Coast Guard Compass
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Coast Guard
6/22/2017

The Navy is laying the groundwork to bring back the well deck for a new America-class Amphibious Assault Ship. The surface attack technology will add a new dimension of amphibious warfare capability to the planned LHA 8 (Bougainville), whose construction is scheduled to begin late next year.

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Scout
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Navy
6/22/2017

The Defense Department has selected Huntington Ingalls for a $3 billion modification to an existing contract to design and build the America-class Landing Helicopter Assault Replacement Amphibious Assault Ship. The vessel is intended to replace the current Wasp class, bringing with it greater stand-off capabilities.

6/22/2017

The environment and even weather patterns could be markedly affected by plans to build hundreds of dams in Brazil's Amazon region, an international research team warns. Team members say the dams along Amazon tributaries would block nutrients vital to downstream ecosystems, as well as flood vast tracts of forest, in turn threatening aquatic and terrestrial wildlife.

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The Japan Times
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Amazon
6/22/2017

Sand-toned concrete and 50 million pounds of sandbags have replaced a wooden walkway along Queens' Rockaway Beach in New York, which, along with many homes, was destroyed by Superstorm Sandy. The vast new boardwalk structure is one example of the kind of costly coastal protective measures that will need to be adopted in the face of changing weather patterns and rising seas.

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GreenBiz
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rising seas, superstorm Sandy
6/22/2017

July will bring the launch of new MS4 projects in the Beaufort, S.C., area. The projects require the development and enforcement of ways to curb pollutants in stormwater runoff from various activities, including construction.

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stormwater runoff, S.C.
6/22/2017

Rather than join the Wyoming Valley Sanitary Authority initiative, three municipalities in Wyoming will jointly strike out on their own to meet federal mandates to reduce water pollution. The cost to property owners isn't yet known because remediation plans aren't yet concrete.

6/22/2017

Sediment deposition from reservoirs associated with China's many hydropower projects is a huge issue addressed in a new study. The research examines long-term aspects of runoff and sediment between 1955 and 2010 and concludes that both runoff and sediment are decreasing, with a much higher rate of sediment reduction.

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MDPI (Switzerland)
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China
6/22/2017

A maneuverable robot about the size of an AA battery is seen as a possible future replacement for colonoscopies to check out and work on patients' intestines. The product of researchers at Israel's Ben-Gurion University of the Negev is capable of carrying a variety of payloads and can even perform procedures.

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Ben-Gurion University
6/21/2017

Aging energy grids need more and more help to maintain reliable flows, and a Massachusetts startup believes it may have an answer in the form of a battery system that uses molten metal. Ambri's system consists of durable liquid magnesium and antimony electrodes separated by a molten salt electrolyte and operates at a high temperature provided by self-heating during charging and discharging, keeping costs low.

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ASME
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Ambri