New Zealand scientists ‘potty train’ cows for climate benefits

Scientists say they have successfully “potty trained” cows to urinate in a designated toilet area as part of a programme aimed at slashing greenhouse gas emissions.The team of New Zealand and German researchers admitted the idea began as a joke but said dealing with cows’ nitrogen-rich liquid waste could have genuine long-term climate benefits.“If we could collect 10 or 20 per cent of urinations, it would be sufficient to reduce greenhouse gas emission and nitrate leaching significantly,”…