Dubious lung float test: The test, which has been around for centuries and remains essentially unchanged in spite of medical advances, is typically used in cases when births occurred outside of a hospital. Critics have likened the test to witch trials, when women were deemed to be witches based on whether they floated or sank. Many medical experts say that air can enter the lungs of a stillborn child even without breathing. Air can enter when the baby’s chest compresses as it squeezes through the birth canal, through CPR or during the ordinary handling of the body. If the body is decomposed, gases may cause the lungs to float. https://www.propublica.org/article/lung-float-test-stillbirths-boston-university-northeastern-law