Video: Designing concrete trumpets using 3D printing

By Lisa McDonald / May 12, 2021

Wind instruments can be made from an array of materials because the sound depends mainly on how the air is shaped rather than the instrument’s body. Learn how a German mechanical engineer used 3D printing to design a trumpet out of concrete.

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Video: NASA technology extracts oxygen from Martian atmosphere

By Lisa McDonald / May 5, 2021

To achieve future manned missions to Mars, we must be able to extract oxygen from the Martian atmosphere. An experimental instrument aboard the Perseverance rover called MOXIE succeeded in extracting oxygen for the first time during a test on April 20.

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Video: 3D print a home using local soil

By Lisa McDonald / April 28, 2021

Many companies creating 3D-printed homes rely on using concrete or synthetic materials like plastic, materials not always readily available in all parts of the world. In Italy, Mario Cucinella Architects and 3D printer manufacturer WASP are collaborating to design a 3D printing process for homes that uses local soil.

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Video: Startups move solid-state batteries toward commercialization

By Lisa McDonald / April 21, 2021

Solid-state batteries show great promise to outperform conventional lithium-ion batteries in terms of energy density, weight, cost, and recharge times. In recent months, several startup companies announced noteworthy progress in developing solid-state batteries for next-generation electric vehicles. Today’s CTT highlights the work being done by QuantumScape, a California-based battery research company.

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Video: Recent Greenland election sets new course for rare earth mining operations

By Lisa McDonald / April 14, 2021

Greenland is at the center of many recent discussions on establishing new rare earth mining operations outside of China. Greenland’s election on April 6, however, gave a different party its first-ever chance to form a government, which will likely shape the island’s future mining decisions.

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Video: Making guitars out of glass

By Lisa McDonald / April 7, 2021

Stringed instruments are traditionally made out of wood due to the material’s unique mechanical and acoustical properties. In recent years, musicians have experimented with materials besides wood, and today’s CTT looks at the work of one Florida-based musician who specializes in making guitars out of glass.

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Video: Ghanaians turn waste into art

By Lisa McDonald / March 31, 2021

Some countries that are significant importers of global waste do not have strong waste management infrastructures, which makes handling the waste difficult. In the absence of government programs, entrepreneurs have started their own initiatives to aid local communities in managing waste. Learn about two individuals in Ghana combating e-waste and glass waste, respectively.

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Video: Bladeless generators—a possible future for wind energy

By Lisa McDonald / March 24, 2021

Since 2014, Spanish technology startup Vortex Bladeless SL has aimed to develop a bladeless wind generator as an alternative to conventional wind turbines. Learn more about the technology and find out when we may see it commercialized.

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Video: Choosing the best glass for your St. Paddy’s beer

By Lisa McDonald / March 17, 2021

Today is St. Patrick’s Day! As you prepare a celebratory beer, how do you choose which type of glass to serve it in? The videos in today’s CTT offer some historical and technical suggestions on which glass will best serve your needs.

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Video: 2020 Brick in Architecture Awards span the globe

By Lisa McDonald / March 10, 2021

Since 1989, the Brick Industry Association has sponsored the Brick in Architecture Awards to recognize exceptional uses of clay brick in architecture. The 41 global winners for the 2020 awards include entries spanning the United States, Australia, Canada, China, and Germany.

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