Summer means heading outdoors; backyard hangouts, beach trips, road trip snack stops, picnics, and a cooler are always part of the plan. The problem is that most people pack their coolers the same way: ice packs at the bottom with food on top. This habit can actually cause issues.
According to the FDA, cold food needs to stay at 40°F or below to keep bacteria from multiplying, and the way most people load their coolers can make that surprisingly hard to pull off once the sun starts beating down on it.