Alex Cohen is the Director of Learning and Evaluation for the Richard M. Fairbanks Foundation. In Indiana, high school students can earn one of three diplomas—a Core 40 diploma, a more challenging Honors diploma and a less rigorous general diploma. But under new federal guidelines that are part of the Every Student Succeeds Act, or […]

减少香烟中的尼古丁含量可能会导致一些目前吸烟者吸烟更多——至少在短期内是这样。但也有证据表明减少香烟中的尼古丁有助于减少吸烟。