A eukaryote is any cell or organism that possesses a clearly defined nucleus. Eukaryotic cells form the foundation of complex, multicellular life, including apple trees, mushrooms, fish and humans.

Different structures have different functions or purposes. The individual parts of any structure need to be selected, arranged and fixed together carefully to make sure the structure carries out its ...

Russell has a PhD in the history of medicine, violence, and colonialism. His research has explored topics including ethics, science governance, and medical involvement in violent contexts. Russell has ...

“Structural heart disease” is an umbrella term that refers to conditions that affect different structures within the heart. Some of these problems can be present at birth, while others develop later ...

In one of the earliest known widespread traditions of monument-making, the enigmatic stone structures known as mustatils found across northwestern Saudi Arabia originated around 7,000 years ago–well ...