Scandinavia and the World

Comments #9761061:

There are three sheep per person in Australia. New Zealand h 10 5, 10:41pm

Some time ago, I've heard that Australian scientists try to reduce the greenhouse-gas-emition of their sheep by genetic-engeneering of the sheeps microbiome...
Somebody even calculated, that the sheep in 'Down-Under' contribute more to global warming than all cars in Australia...?
(Fact or urban-legend...?)