The concept of putting a sick person in isolation has been around for a very long time.
A pandemic is the global outbreak of a disease. There are many examples in history, the most recent being the COVID-19 pandemic.
Over 100 years ago, a killer strain of the influenza virus infected over a third of the world's population.
The Gregorian calendar — used by most of the world — was introduced to fix errors in the Julian calendar mostly having to do with leap years.
On Feb. 23, 1945, six Marines raised the U.S. flag over the Japanese island of Iwo Jima. Their photo is one of the most iconic images of World War II.
One of the main risks of this rare blood disorder is internal bleeding into muscles, joints and soft tissue.
Fought on a tiny volcanic island 75 years ago, this brutal clash between American and Japanese forces defined the horror of the Pacific theater.
The seasonal flu shot is a yearly vaccine administered to protect against the flu, or influenza. In the United States, flu shots are recommended for everyone ages 6 months and older.
Megalodon was the largest shark and one of the largest fish on record. It went extinct about 2.6 million years ago.