This feeling can have many causes, often the sight of worms, spiders, pus or faeces. Disgust is a normal, but not a particularly nice Feeling. Some people react physically to it, for example, with lips herpes. But why are people disgusted? Also: off the grid – how does it work with torpedoes? Versatile rubber – what is rubber? And: Crispy potato snack, such as are produced delicious Chips?