Engineering

Researchers 3-D print ultra-strong steel parts from powder

Soldiers needing replacement parts may turn to 3-D printers in the future to rapidly deliver reliable and ultra-strong metal parts. Army researchers are looking at new technologies to create steel alloy parts from powder ...

US seeks ways to recycle lithium batteries in cars, phones

The U.S. government will lead an ambitious effort to develop technologies to recycle lithium-ion batteries from electric vehicles, cellphones and other sources to ensure a reliable and affordable supply of metals crucial ...

Energy & Green Tech

Breaking barriers in solar energy

Stop for a moment and imagine an efficient highway system. No need to jockey for position, no choke-point merging from three lanes into one, no long idles at ill-timed traffic lights, no rolling roadblocks as the motorist ...

Energy & Green Tech

Biofuel from a container

More than four billion tons of crude oil are produced every year, and electricity from wind, solar and hydropower plants cannot entirely supplant fossil sources of energy. At best, renewables could cover the energy needed ...

Engineering

Making cement sustainable

Cement production accounts for up to nine percent of global anthropogenic carbon dioxide emissions, according to the World Business Council for Sustainable Development. Sabbie Miller, assistant professor in the Department ...

Engineering

It's too soon to call 3-D printing a green technology

Over the past decade 3-D printing has captured the imagination of the general public, engineers and environmental visionaries. It has been hailed as both a revolution in manufacturing and an opportunity for dramatic environmental ...