By: Rachael Rettner, Senior Writer
Published: 08/08/2013 08:00 AM EDT on LiveScience
More than half of U.S. children with asthma are exposed to s...
Read Whole Story
It only takes 20 minutes of secondhand smoke exposure before breathing is impaired, a new study shows.
Researchers from the University of Athens, t...
Get top stories and blog posts emailed to me each day. Newsletters may offer personalized content or advertisements. Learn more.