From hand milking with a metal pail and wooden stool to tie-stall and parlour systems, the methods dairy farmers have used to milk their cows has certainly evolved over the years. While the most recent milking system introduced to the dairy industry may help free up a bit of time for dairy farmers, there is still no shortage of hard work.A number of farmers are now adopting an automatic milking system and with it comes a few questions, especially around the environmental impact of the new system.