Abbreviated Science Round-up: Seeing memories, citizen science planets, surprise environmental news
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Devices to dredge memories out of the mind and make them visible are a staple of fiction from anime to Black Mirror. For decades, scientists have worked to identify a specific mechanism used to record and recall an individual memory. Is a memory preserved in a single neuron? A collection of connected neurons? Is the ‘engram’ — the permanent storage of the memory — a chemical held at a single location, a somatic change in gene expression, or an electrical state somehow preserved over time?

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