WHY go green? The two businesses that we spoke to gave reasons as varied as their industries. For the chief executive officer of one of the companies, it was a response to what he saw as needless wastage in the food and beverage industry. He went on to challenge someone - today the chief technology officer at the firm - to develop an enzyme that could convert organic waste into fertiliser in 24 hours. Biomax, which deals in organic waste treatment, was born after five years research & development.