An imbalance in gene activity in two types of immune cells explains why lung fibrosis after a severe COVID-19 infection doesn ...

Long-term smokers often have a chronic cough. They may get used to it, and perhaps also to being winded after climbing stairs.But there are good reasons to take these symptoms seriously, as they can ...

A study found that burning wood in our homes is one of the most dangerous types of air pollution. Here’s what you need to ...