Why People Smoke. Carl C. Seltzer has been engaged in research in physical anthropology at Harvard since 1937, and a survey which he made of the smoking habits of the class of 194 ...

The smoke in the air on Tuesday was so thick you could see it and smell it. The Minnesota Pollution Control Agency (MPCA) ...

Smoke from more than 100 wildfires blazing in Canada is expected to spread and impact air quality index in Minnesota.