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).

The Nature Index 2024 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

The circulatory system consists of one heart, five liters of blood, and approximately 96,000 kilometers of blood vessels, responsible for transporting nutrients and waste throughout the body. Water ...