Answer by  
                                                                                          sashangeljaz (992)
                                                            
                          
                          
                                                          If you are asking about the Discovery Channel, it began on July 17th, 1985.  It's main subjects are science and technology. It has a variety of formats including basic documentaries (for example "shark week" shows) or reality programs (filming the fisherman on "Deadliest Catch".