Making things stick: Nature schools engineers in adhesion

Adhesives are all around us, holding together our walls, furniture, cars, electronics and packaging. In nature, adhesives are used by shellfish for sticking themselves to rocks, by algae and bacteria for making slimes on outside surfaces, and by insects and geckos when they crawl up walls. We are learning how nature makes adhesives in order to develop new technologies for benefiting society. Currently, the great majority of adhesives are synthetic and derived from petroleum. Epoxies; acrylates (e.g., Super Glue); and urethanes (like Gorilla Glue) all get their start from oil. <a href="https://medium.com/purdue-engineering/making-things-stick-nature-schools-engineers-in-adhesion-d14b306b84b2">Website</a>