The strange, sometimes sickening things we’ve done to understand what goes on inside our guts.

In the late 1960s an international contingent of psychiatrists took up a monumental task: making schizophrenia mean the same thing to doctors around the world.

The history of pasteurization and the controversy surrounding it demonstrate the complexity of milk as a chemical substance and as the subject of polemics on pathology, modern farming, and health and nutrition.

How greed—and a group of Nazi prisoners—killed off one of the most iconic birds in American history: the ivory-billed woodpecker.

How a weird “scientific” diet fad conquered America in the early 1900s.

And what does it have to do with the unusual chemistry of carbon?