 Many chemical processes are designed to be as efficient as possible. There are many reasons why this is done. Firstly, it is very costly if a chemical synthesis is not designed to be efficient. In industry, chemists are aiming to modify or develop reactions so that they will proceed at ambient temperature and pressure. This is because it costs energy to produce both high and very low temperatures. The 2005 Nobel Prize for Chemistry was jointly awarded to a group of chemists who developed an energy efficient catalyst for a high atom economy reaction so that it was able to proceed at standard ambient temperature and pressure. Recall that a high atom economy reaction is one that uses all the atoms in the reactant to create the product or products. The reaction is called the metaphysis method and is responsible for the synthesis of many polymers with special properties additive to polymers and fuels and biologically active compounds such as insect pheromones, herbicides and drugs.