Hepatitis is inflammation of the liver, the organ responsible for filtering toxins and processing nutrients, and it can be caused by viruses (A, B, C, D, E), alcohol, drugs, chemicals, or the immune system attacking the liver itself (autoimmune hepatitis). This inflammation damages liver cells, leading to symptoms like jaundice, pain, fatigue, and potentially severe scarring (cirrhosis) or liver failure if chronic.  

The RMS Lusitania was a famous British ocean liner torpedoed and sunk by a German U-boat (U-20) on May 7, 1915, off the coast of Ireland. The attack killed nearly 1,200 people, including 128 Americans, significantly swaying U.S. public opinion against Germany during World War I. 

There are 17 Smithsonian museums, galleries, and the National Zoo located in the Washington, D.C. area, with nearly all offering free admission. These include major sites on the National Mall, such as the National Air and Space Museum, National Museum of Natural History, and the National Museum of African American History and Culture. 

Jennifer Lopez began her rise to superstardom as a dancer, specifically known as a "Fly Girl" on the sketch-comedy television program In Living Color in the early 1990s. She was a regular on the show from 1991 to 1993 before launching a successful career as an actress, singer, and dancer. 

Brass is an alloy of copper and zinc, in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic, and chemical properties, but copper typically has the larger proportion, generally 2⁄3 copper and 1⁄3 zinc.