What would our world be like if early man had not domesticated the fearsome aurochs - the likely ancestors of all modern domesticated breeds of cattle?
Fred discovers just how important cows have been to religion, to medicine and indeed to civilisation all around the world, and examines the bovine link with global warming.
What is the future of our cattle? Could we face a future without cows?
http://www.bbc.co.uk/worldservice/documentaries/2008/11/081105_world_without_cows.shtml