| http://www.w3.org/ns/prov#value | - which requires large amounts of land, water and crops to produce, backers say.It could also benefit people???s health, especially in heavy meat-eating countries like the US, and reduce outbreaks of diseases such as avian flu, they say.???The biggest challenge is that people who consume a lot of meat really like meat, and to convince them to try something different may be extremely difficult,??? sa
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