Good circulation is vital for a healthy and well-functioning body. The circulation system delivers oxygen, nutrients, hormones, and immune cells to every cell in the body, while removing waste like ...

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. It is being hailed as a sea change in scientific understanding of the global ocean ...

Schematic representation of gas exchange and waste removal processes within the human body (left). Schematic of a circulating air filtration system with a similar structure to the human body (right).