Climate change: Bill Gates backs Australian start-up targeting cow burps - BBC News

Livestock - such as cows - produce methane when their stomachs are digesting hard fibres.

10 hours agoShareclose panelShare pageCopy linkAbout sharingRelated TopicsClimate changeImage source, Getty ImagesImage caption, Microsoft co-founder Bill GatesBy Annabelle LiangBusiness reporterBillionaire Bill Gates has invested in an Australian climate technology start-up that plans to reduce the methane emissions of cow burps.

The Microsoft co-founder has been outspoken about the environmental impact of meat production.

Methane is the most common greenhouse gas after carbon dioxide (CO2).

Livestock such as cows, goats and deer produce methane when their stomachs are breaking down hard fibres like grass for digestion.

This fermentation process creates methane gas which is then mostly belched out again.

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