A wasp nest made of masticated wood. Wasps often use a type of paper created from wooden particles and their secretions. Thousands of years ago, Chinese paper inventors carefully observed wasps and drew inspiration. Typically, large wasps’ nests consist of several horizontal combs, aligned in parallel lines. Several layers of the wasp paper close off the entire ensemble from the outside, and there is only one small entrance. The layers offer physical protection, and the air between the combs protects against strong temperature fluctuations.