Novak Djokovic born 22 May 1987is a Serbian professional tennis player who is currently ranked world No. 1 by the Association of Tennis Professionals He is considered to be one of the greatest tennis players of all time
Sport is all forms of usually competitive physical activity which, through casual or organised participation, aim to use, maintain or improve physical ability and skills while providing entertainment to participants, and in some cases, spectators. Hundreds of sports exist, from those requiring only two participants, through to those with hundreds of simultaneous participants, either in teams or competing as individuals.Science is a systematic enterprise that builds and organises knowledge in the form of testable explanations and predictions about the universe. In an older and closely related meaning, "science" also refers to this body of knowledge itself, of the type that can be rationally explained and reliably applied. Ever since classical antiquity, science as a type of knowledge has been closely linked to philosophy. In the West during the early modern period the words "science" and "philosophy of nature" were sometimes used interchangeably and until the 19th century natural philosophy (which is today called "natural science") was considered a branch of philosophy.Dance is the art of movement of the body, usually rhythmically and to music, using prescribed or improvised steps and gestures. "A dance" is any one prescribed sequence of such movements, or the music to which it is performed, or an event at which it takes place. Dance may also be regarded as a form of nonverbal communication recognisable in other animals; in bee dances and behaviour patterns such as mating dances.News is packaged information about new events happening somewhere else; or, alternatively, news is that which the news industry sells. News moves through many different media, based on word of mouth, printing, postal systems, broadcasting, and electronic communication. Common topics for news reports include war, politics, and business, as well as athletic contests, quirky or unusual events, and the doings of celebrities.