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Researchers at Caltech have created a new prototype digital petri dish that can send information about what's growing on it to a laptop for further analysis, reports Technology Review's Katharine Gammon. Dubbed the "ePetri," the team created its prototype using Lego blocks and an image sensor from a cell phone. "A sample is placed on top of a small image-sensor chip, which uses an Android phone's LED screen as a light source," Gammon says.

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Springer Nature announces €9,500 fee to make papers open-access in Nature and its family of journals.

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