It’s one of our favorite foods. But how much do you know (or care to know) about the chicken in your diet? To feed American demand, we raise and slaughter nine billion birds every year. In her new book, “Big Chicken: The Incredible Story of How Antibiotics Created Modern Agriculture and Changed the Way the World Eats,” science writer Maryn McKenna charts chicken’s relatively recent rise from a rare treat to a super-sized culinary colossus — and the concerns many have about it. | Then, we’re looking for your input on the podcast. What do you like? What could we do better? Let us know. Text “podcast” to 63735. You’ll get some updates from us from time to time, but you can always text STOP to stop getting them. Thanks.