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Here on Earth, scientists study layers of sediment like dirt and sand to better understand how rocks form. The same contextual clues geologists use to explain how sedimentary rocks form on Earth can also be applied to extraterrestrial planets. Recent studies of Mars, for example, have looked at photos of sedimentary…

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The first contact between the Aztecs of Mesoamerica and Spanish Conquistadors is well documented as bloody and disastrous for the Aztecs. However, it was the period of time just after first contact that was much deadlier for the native people, as diseases tore through these communities. These diseases were strong…

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How does a cell stay alive? How do molecules in a cell “know” how to react with one another? Does this chemistry become more complex over time, and if so, why? In Dr. Betül Kacar’s lab at Harvard University, scientists look for answers. In order to understand how a complex communication system…