The first human has died from the H10N8 avian flu virus, which has only been detected in birds until now. Take a look at history's four main flu outbreaks.
The Spanish flu came on quickly. Some people felt fine in the morning but died by nightfall. People who caught the Spanish Flu but did not die from it often died from complications caused by bacteria, such as pneumonia.
Many foods that you think have health benefits may hold hidden dangers for your diet.
As the saying goes, the eyes are "the window to the soul." See if you can match these eyes to the souls of some of our favorite celebrities.