In the fight to save the environment and control emissions has brought farm animals into focus, in the UK they account for 7-10% of all methane emissions. Methane is 23 times more damaging to the environment than C02. So what is to be done? David Milliband has warned the agreicutural sector it may face heavy fines unless it reduces emissions. A major source is dairy cows, each one producing 500 litres of methane a day, are we prepared to drop our consumption of dairy products to save the earth? The type of grass has an effect with local farming practice already along the best lines and new supplements are being tested such as fish oil and other natural additives but an initiative in New Zealand raised the question, who should pay for the research and if successful the cost of purchasing the feed?