As viewers of the Showtime series “Dexter” are well aware, everyone’s favorite serial killer has a ritual whereby he saves a drop of blood from each of his victims on a microscope slide. Now fans can ...

In the mid- to late-19th century, science gripped the public imagination. Literacy rates were rising, feeding demand for books. Theories, put forward in books like Charles Darwin's Origin of Species, ...

A miniature photograph of the moon, beard hairs whose owner has been dead for centuries, a shaving of Egyptian mummy bone, flowerlike patterns constructed from butterfly scales and algae called ...