Burger King US urges diet change for farting cows

Burger King has released an advertisement encouraging US farmers to change cow diets in order to reduce greenhouse gas emissions. The controversial video ad features children in cowboy hats singing about the impact methane gas emitted due to cow flatulence has on global warming.

Burger King claims adding lemongrass to cow diets could ease digestion and dramatically reduce methane emissions, but farm leaders say the ad is 'condescending and hypocritical'. Some scientists also criticised Burger King's message and its focus on cow flatulence, with one saying that early all enteric methane from cattle is from belching. 'Suggesting otherwise turns this serious climate topic into a joke.' The advert has already been watched over 3 million times on YouTube.