Anthropogenic emissions have, until now, been collected, but not harmonised . These consist, for example, of data of nitrogen oxides (NOx) emissions, smog, methane, CO 2 and even pollen and dust produced, among others by heavy industry and power plants.

Making decision that may affect the environment is not that simple. For example, if a EU policy maker believes that biofuels can reduce CO 2 emissions.

More than one third of the total plastic production in Europe—about 14 million tonnes per year—are polyolefins, also known as polyalkenes.