Mimicking Mother Nature

Article Tools

Print

E-mail

Comments

RSS

Benyus, who hopes companies will ultimately transcend mere product design to embrace nature on a more holistic level, breaks biomimicry into three tiers. On a basic (albeit complicated) level, industry will mimic nature's precise and efficient shapes, structures, and geometries. The microstructure of the lotus leaf, for example, causes raindrops to bead and run off immediately, while self-cleaning and drying its surface -- a discovery that the British paint company Sto has exploited in a line of building paints. The layered structure of a butterfly wing or a peacock plume, which creates iridescent color by refracting light, is being mimicked by cosmetics giant L'Oreal in a soon-to-be-released line of eye shadow, lipstick, and nail varnish. The branchlike structure of bronchial tubes in human lungs inspired engineers at Morgan Fuel Cells to invent an efficient solution for administering oxygen and hydrogen gas flow in fuel cells.

The next level of biomimicry involves imitating natural processes and biochemical "recipes": Engineers and scientists are now looking at the nasal glands of seabirds to solve the problem of desalination; the abalone's ability to self-assemble its incredibly durable shell in water, using local ingredients, has inspired an alternative to the conventional, and often toxic, "heat, beat, and treat" manufacturing method. How other organisms deal with harmful bacteria can also be instructive: Researchers for the Australian company Biosignal, for instance, observed a seaweed that lives in an environment teeming with microbes to figure out how it kept free of the same sorts of bacterial colonies, called biofilms, that cause plaque on your teeth and clog up your bathroom drain. They determined that the seaweed uses natural chemicals, called furanones, that jam the cell-to-cell signaling systems that allow bacteria to communicate and gather. Most antibacterial products on the market, such as soaps and coatings for contact lenses, are eventually susceptible to bacterial resistance, which is why Biosignal is now working to develop products that incorporate furanones in a wide range of applications, from medical equipment to cosmetics.

Ultimately, the most sophisticated application of biomimicry, according to Benyus, is when a company starts seeing itself as an organism in an economic ecosystem that must make thrifty use of limited resources and creates symbiotic relationships with other like organisms. A boardroom approach at this level begins with imagining any given company, or collection of industries, as a forest, prairie, or coral reef, with its own "food web"(manufacturing inputs and outputs) and asking whether waste products from one manufacturing process can be used, or perhaps sold, as an ingredient for another industrial activity. For instance, Geoffrey Coates, a chemist at Cornell, has developed a biodegradable plastic synthesized from carbon dioxide and limonene (a major component in the oil extracted from citrus rind) and is working with a cement factory to trap their waste CO2 and use it as an ingredient.

RSS | Comments | E-mail | Print