Although television has existed in some form since the 1920s, many countries did not have television until several decades later.

Mammals exhibit extraordinary diversity, from the diminutive bumblebee bat, which weighs no more than a penny, to the largest animal to have ever lived, the blue whale. All members of this warm-blooded vertebrate group nurse their young on milk produced by the female’s mammary glands, and, with a few notable exceptions, most also give birth to live young and have bodies insulated by hair. Of the world’s c. 5,500 mammal species, almost one in four are threatened with extinction.

List of the top foods purchased at a grocery store.

A list of the best ballet schools in the country and world.

Choose the right brand of aftershave for getting that perfect feeling and smell.

Homonyms are words that sound the same but are spelled differently. Some of them can be quite confusing.

The Old Persian culture has left behind thousands of architectural monuments. Choose your favorite city in Iran.