Climate change: Cows 'toilet trained' in bid to curb greenhouse gases

Cows have been taught to use a "MooLoo" as part of a study into the prevention of greenhouse gases.

The toilet allowed researchers in Germany to collect and treat the urine.

The ammonia from cows' urine turns into the greenhouse gas nitrous oxide when it's mixed with soil.

Worldwide, about 10% of all greenhouse gas emissions from human activities comes from cattle.