UK scientists look for sustainable ways of raising livestock

Cows and sheep are responsible for 14 percent of global greenhouse gases – the same as all the cars, trucks and planes in the world.

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    Some climate change experts argue that a vegetarian diet is key to protecting the environment.

    Sheep and cows produce methane gas - a toxic substance - and graze on land that could be used to grow crops.

    But some scientists at a research centre in the UK disagree and are looking at sustainable ways of raising livestock.

    Al Jazeera's Jessica Baldwin has more from Devon in western England.


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