Dear Derek Moody:

On Mar 7, 3:29 pm, Derek Moody wrote:
On Wed, 07 Mar 2007 22:25:52 +0000, Derek Moody
....
Animal health and human health are both in the balance
but so is the health of the planet. Livestock production
is at the heart of most of the world's environmental
catastrophes - rainforest destruction, global warming,
water depletion, spreading desserts, loss of soil fertility,
soil erosion, ozone depletion and the collapse of the
world's oceans.

Actually, humans and animals make methane, which is a net ozone
producer (via NOx and visible light). You might want to edit out
"ozone depletion".

David A. Smith