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Ysabel David NMDC town hall at ASM Microbe 2019 ExaSheds Greater levels of pathological tau protein, primarily in the brain’s medial temporal lobe (orange and yellow at bottom in cross section of the brain), were associated with weaker synchrony of slow waves (red) and sleep spindles (orange), two brain waves important for storing memories while we sleep. (Credit: Matthew Walker and Joseph Winer/UC Berkeley) Susannah Tringe and James Rosenblum at a hydraulic fracking site in Colorado. (Credit: James Rosenblum) The central area of chromosomes, the centromere, contains DNA that has survived largely unchanged for hundreds of thousands of years, researchers at UC Davis and the Lawrence Berkeley Laboratory have found. (Credit: Sasha and Charles Langley)