This iceberg in Scoresby Sound, East Greenland, is one of many frozen sights in the country. Photograph by Frans Lanting, Nat Geo Image Collection Craters at Lake Myvatn in Iceland are among the ...

Arthritis isn’t a single disease; the term refers to joint pain or joint disease, and there are more than 100 types of arthritis and related conditions. People of all ages, races and sexes live with ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Gordon Scott has been an active investor and ...

The flu is caused by influenza viruses, not bacteria. Influenza can cause symptoms like fever, chills, and body aches. Influenza (referred to as the "flu") is a contagious respiratory disease caused ...