Human evolution is often told as a tidy story of adaptation, yet some of our most familiar body parts still defy straightforward explanation. From the jut of the human chin to the curve of the outer ...

Goosebumps are one such odd body function, which we have all experienced but have rarely been compelled to probe into. They ...

Renin-angiotensin system, or RAS, is a physiological mechanism essential to human body function. The SARS-CoV-2 virus causes overactivation and malfunction of this system. The RAS regulates innate ...

Folic acid, also known as vitamin B9, is an important B-vitamin with many vital functions in the human body. It was discovered in the early 1930s when an English scientist isolated a compound from ...