Red dye fills the tiny blood vessels of this tongue tissue. The large, roundish structure in the center of image is a projection on the surface of the tongue known as a fungiform papilla. These ...

We’re willing to bet it’s been a minute since you prepared slides in a science lab. If your kid’s back-to-school list includes a microscope, you probably need a refresher before beginning your search.

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, ...