Archaeology

Centuries of child labor left lasting spinal damage in Dutch children, study finds

Children in the postmedieval Dutch workforce worked so hard that their spines became worn and deformed, with some children affected before they even had a chance to lose their baby teeth, a new study published in the International ...

General Physics

How plastic welds retain a molecular 'memory' of their former surfaces to strengthen pipe joints

Welding plastic is a critically important part of everyday engineering—especially for preventing leaks in underground water and gas pipes. For decades, engineers have understood that a properly welded joint in polyethylene ...

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Medical Xpress

Tech Xplore

Light-powered soft robots that can keep jumping forever

Researchers from North Carolina State University have created teardrop-shaped soft robots that leap upward or forward when exposed to infrared light—and will keep jumping as long as the light is present. The work demonstrates ...

New transistor brings high voltage to microchip scale

Inside every electronic device, the flow of electricity is controlled by a switch called a transistor. For decades, these switches were made from silicon. More recently, engineers have turned to a material called gallium ...