Terror group ISIS released a video showing the beheading of British aid worker David Haines. (ISIS photo )

Video shows slaying of British aid worker

Islamic State extremists released a video showing the beheading of British aid worker David Haines, who was abducted in Syria last year, and…

Soyuz TMA-12M capsule with three crew onboard, including U.S. astronaut Steve Swanson, has successfully undocked from the International Space Station (NBC/NASA VIA RTV)

Space crew successfully undocks from ISS

Two cosmonauts and an astronaut headed back to Earth – in a four-hour trip to Kazakhstan — after their mission aboard the ISS came to an en…