Foam from cow lungs can be transformed into a lifesaving treatment for premature infants struggling to breathe. We take you to a slaughterhouse in Canada where an unusual sort of craftsmen retrieve this precious liquid before it’s shipped around the world

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In February, Medicare announced that it would pay for an annual lung cancer screening test for certain long-term smokers. Medicare recipients between the ages of 55 and 77 who have smoked the equivalent of a pack a day for 30 years are now eligible for the annual test, known as a spiral CT scan

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