"People in Cardiff are so fortunate. It's quite a different experience with clean air at sea level".

Based on a 2021 study published in Environmental Research, clean air has been linked to improved sleep quality, better respiratory health and a reduction in symptoms associated with allergies and ...

The trachea has a number of adaptations: cartilage rings in the walls of the trachea help to keep it open ciliated epithelium and goblet cells to clean the air before it reaches the lungs Goblet ...