MIT researchers develop a way to inject drugs at near speed of sound without needles MIT scientists are developing a needle-less injection technology that could see doctors administering drugs using a tiny high-pressured jet in future.
New Synthetic Diamonds Are Hardest Gems Ever Created. The team tested the artificial diamond's hardness by pressing a pyramid-shaped piece of diamond into the nanotwinned diamond. Tian's group made a small indentation in their artificial diamond, applying pressures equivalent to nearly 200 gigapascals (GPa) — about 1.9 million atmospheres. An ordinary natural diamond would crush under just half that pressure.
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