Tagged With Lung

Pulse oximeter: What it measures, how it works, and how to read it

Rebecca Cairns

Here's what's inside a whale's blowhole -- and it's not seawater

Nathaniel Lee, Jessica Orwig

An undercover investigation reveals air quality on a cruise ship deck could be worse than the world's most polluted cities

Nathaniel Lee, Jessica Orwig

How U.S. cities would look without the Clean Air Act

Gene Kim

The way most people breathe is hurting their health -- here's the right way to do it

Rob Ludacer, Alana Kakoyiannis