At one time or another we’ve all opened a milk container and noticed that something wasn’t quite right or picked up a piece of fruit that was just a little too soft. Reactions, one of my favorite YouTube channels, has a video that answers whether or not you can eat that soft fruit, moldy bread, or drink that sour milk. Reactions is a channel that is all about applying chemistry and biology concepts to common scenarios. To that end, Can I Still Eat This? explains the science of why fruits get soft, why milk gets sour, and how mold grows and spreads through food.