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Jeans! The average American owns twelve pairs of jeans. 200 million pairs of jeans are sold per year in Europe alone. Jeans now make up a global industry worth $700 billion. But not many people seem to know that biology plays a critical role in the jean industry. Regardless of color, style, or brand, it is likely that your jeans were subjected to "stone-washing" to give it a smoother, softer feel. In the early 1980s, this was done by rotating the denim in a drum together with stones, which acted like sandpaper and abraded the jeans. However, as it was difficult to control the amount of abrasion the fabric was subjected to, and acid-washing jeans caused environmental problems, a new method of "stoning" jeans was needed to keep our jeans smooth and comfortable. This is where biology came to the rescue: a technique known as "biostoning" with the enzyme cellulase was...

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