In 1665, English scientist Robert Hooke published Micrographia, a book full of drawings depicting views through what was then a novel invention: the microscope. Peering at a slice of cork through a ...

Every exquisite drawing by Santiago Ramón y Cajal, the founder of modern neuroscience, is marred by a curious mark. Here is the little-known story behind it. Working alone at the turn of the 20th ...

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