Thanks to Fleming’s discovery of penicillin in 1928, antibiotics put an end to a world where people died from the most innocuous infection. But they’re no longer the panacea they once were because resistance is growing. Here are a few useful facts about penicillin and its pals:
1. Half of all antibiotics are given to animals
We associate these bacteria-killing drugs with human use, but antibiotics are widely used to treat food-producing animals like chickens and pigs.