Maryn McKenna is a science journalist and author. In her previous appearance here, she described how she launched her career in investigative journalism and, eventually, she landed with the Atlanta Journal-Constitution covering the CDC. In time, Maryn became an expert in the over-use of antibiotics with animals and humans, and that has led to her latest book, Big Chicken: The Incredible Story of How Antibiotics Created Modern Agriculture and Changed the Way the World Eats. Maryn told me about how antibiotics fed to farm animals seemed like a really good idea in the 1950s. Later, bacteria became resistant to these antibiotics—with disastrous consequence for humans. Early on, Europe understood the scope of the problem, but the U.S. did not. This is a great (and scary) work of science investigative journalism.