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Scientists are increasingly warning that sitting for prolonged periods - even if you also exercise regularly - could be bad for your health. And it doesn't matter where the sitting takes place - at the office, at school, in the car or before a computer or TV - just the overall number of hours it occurs.

Dutch scientists have been growing pork in the laboratory since 2006, and while they admit they haven't gotten the texture quite right or even tasted the engineered meat, they say the technology promises to have widespread implications for our food supply.