One quarter of the world's tropical land could disappear by the end of the century unless meat and dairy consumption falls, researchers have warned.

If the global demand for animal products continues to grow, large swathes of natural land will vanish potentially leading to widespread loss of species and their habitats.

Some nine per cent of natural land -- 95 per cent of which is in the tropics -- could go within 80 years unless global dietary habits change, the scientists say.

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