It’s summertime and, in Georgia, that means stifling heat and occasional poor air quality. Ground-level ozone, a main ingredient of smog, has harmful effects, notably on the young, older adults and those with respiratory illnesses. It’s the focus of today’s discussion, led by a pediatric pulmonologist who calls for stronger ozone standards based on scientific evidence. The other column is written by an Atlanta teen who suffers with asthma.