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​Listen to Episode 90 to get the full stories below.

​MIT Engineers Test An Idea For A New Hovering Rover | Brighter Side News (01:28)

Due to the lack of atmosphere, the moon and other airless bodies such as asteroids can build up an electric field. Moon’s electric charge is strong enough to levitate dust more than 1 meter above the ground.Engineers at NASA and elsewhere have recently proposed harnessing this natural surface charge to levitate a glider The concept resembles a retro-style, disc-shaped flying saucer, and uses tiny ion beams to both charge up the vehicle and boost the surface’s natural charge.
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​MIT unveils the world's longest flexible fiber battery. You can weave and wash it in fabrics | ZME Science (08:01)

Engineers at MIT have created a rechargeable lithium-ion battery in the form of very long fiber. The proof of concept is 140 meters long, making it the longest flexible fiber battery thus far. Fiber batteries are not new, however previously they have all the lithium and other key materials outside the fiber, which would leave them unprotected.The thickness of the fiber device is only a few hundred microns, much thinner than any previous attempts at a fiber battery.
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​Scientists Can Now Print Metal Objects That Are Only 25 Nanometers Long | Interesting Engineering (13:08)

A group of scientists has set a new benchmark in 3D printing by succeeding in fabricating ultrasmall metal objects using a new technique. According to the team, their system can be used to make objects out of copper just 25 billionths of a meter in diameter (equivalent to 25 nanometres). Their electrochemical 3D printing technique fabricates complex conductive structures with nanometer resolution, and it could have potential applications in battery technology, microelectronics, and sensor technology.
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​Smart sutures to monitor deep surgical wounds | MedicalXPress (17:24)

Monitoring surgical wounds after an operation is an important step to prevent infection, wound separation and other complications. However, when the surgical site is deep in the body, monitoring is normally limited to clinical observations or costly radiological investigations that often fail to detect complications before they become life-threatening. To detect wound complications as soon as they happen, a team of researchers from National University of Singapore (NUS) have invented a smart suture that is battery-free and can wirelessly sense and transmit information from deep surgical sites. These smart small sensors can monitor multiple problems (i.e. Wound integrity, gastric leakage and tissue micromotions), while also providing healing outcomes which are equivalent to medical-grade sutures.

​Researchers uncover protein that reverses muscle aging | Brighter Side News (23:13)

A University at Buffalo-led research team has shown that a protein, NANOG, is effective at reversing aging in skeletal muscle cells. Skeletal muscles are organs of the vertebrate muscular system that are mostly attached by tendons to bones of the skeleton. The overexpression improved some of the primary characteristics associated with age-related deterioration of cells, including autophagy, energy homeostasis, genomic stability, nuclear integrity and mitochondrial function.

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