World population is increasing and expected to reach 9.6 billion by 2050 compared to todays 7.2 billion. The demand of meat and milk is projected to increase respectively by 73 and 58 percent between 2010 and 2050.(Tackling climate change through Livestock, FAO, 2013)
GHG emissions from cattle represent about 65 percent of the livestock sector emissions (4.6 gigatonnes CO2-eq), making cattle the largest contributor to total sector emissions.(Tackling climate change through Livestock, FAO, 2013)
The Livestock's Long Shadow report (FAO, 2006) aims to assess the full impact of the livestock sector on environmental problems, along with potential technical and policy approaches to mitigation. Livestock's contribution to environmental problems is on a massive scale and its potential contribution to their solution is equally large.