One halcyon spring day in 1903, the 69-year-old anatomist and naturalist Dr. James Bell Pettigrew sat at the top of a sloping ...

in which he introduced the use of carbolic acid (phenol) as an antiseptic. This breakthrough significantly reduced the incidence of post-operative infections, marking a turning point in surgical ...

It gets its name from its yellow blossoms, which bloom in the evening. The oil contains linoleic acid, gamma-linolenic acid (GLA), and other omega-6 fatty acids. In the United States, the Food and ...

When a chemical reaction occurs, energy is transferred to or from the surroundings. There is usually a temperature change. For example, when a bonfire burns it transfers heat energy to the ...