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Materials shape human progress—think Stone Age or Bronze Age. The 21st century has been referred to as the molecular age, a time when scientists are beginning to manipulate materials at the atomic level to create new substances with astounding properties.
Taking a step in that direction, Jens Bauer, at the Karlsruhe Institute of Technology (KIT), and his colleagues have developed a bone-like material that is less dense than water but as strong as some forms of steel. "This is the first experimental proof that such materials can exist," Bauer said.
Ars Technica: New laser-printed material is lighter than water, as strong as steel
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