Hydrogen, Oxygen, and the Genius Minds Who Found Them- Before the 18th century, air was considered a single, invisible element—an unremarkable substance all around us. …
The Cancer-Fighting Power of Periwinkle- Periwinkle, also known as Vinca rosea or Catharanthus roseus, is a flowering plant that has been historically significant in medicine. …
Leonard Keeler (October 30, 1903 – September 20, 1949) was an American inventor whose groundbreaking work in lie detection technology revolutionized forensic science and law …