Many artisan cheese producers never pasteurize their milk – it's raw. The milk's natural microbial community is still in there. This microbial festival gives cheese variety and intrigues scientists.
We are all Russian nesting dolls: Our intestines house many bacteria, which house many viruses. These so-called bacteriophages are likely as important for our health as the bacteria they live in.
Lisa Brown for NPR
Rugby and meat: a treat for the gut? A study suggests yes. Here Tony Woodcock (left) and Owen Franks of the All Blacks rugby team turn sausages on the barbecue in 2011 in Christchurch, New Zealand.
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