Tagged With harvard

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In 1919, a holding tank filled with 2.3 million gallons of molasses ruptured and sent an enormous wave of goop through the streets of Boston. It enveloped and destroyed everything in its path — leaving 21 people dead and around 150 others injured. Until now, no one really knew why it was so deadly, but a team of scientists and students believe they have found a solution.

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Lasers and metal were part of 3D printing for decades before the machines became affordable for personal use. But researchers at Harvard are demonstrating a new technique by which 3D metal structures can be printed in midair, without the need for anything supporting them.