Although it is 2017, I thought the discussion is still very applicable, and compelling. It is known that a cow does, on average, release between 70 and 120 kg of Methane per year. Methane is a greenhouse gas like carbon dioxide (CO2). But the negative effect on the climate of Methane is 23 times higher than the effect of CO2. So, clearly we can make the connection between the reduction in cows and a reduction in methane gases, and helping to reduce the speed at which we are destroying the ozone and changing our climate. From that point alone, it is advantageous to reduce the amount of meat we eat. But, in this video, they go further and help us start to understand what our part is in life.