Until recently, the colors of ancient life forms existed only in our imaginations. In museums and on the big screen, we have seen fossil creatures portrayed in striking colors, but those reconstructions were based on very little scientific evidence. However, over the past decade or so, new fossil discoveries and new technologies have given us the chemical evidence needed to work out the actual pigmentation of long-dead organisms. X-ray imaging, which can detect minute traces of the original pigments, has played an important role in that story. This lecture will explore that new area of scientific study, including discoveries made with advanced X-ray imaging techniques at SLAC.
Speaker: Nick Edwards, SLAC
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