The Catalonian tradition of creating human towers called castells stretches back centuries, and has evolved into a competitive sport. Hundreds of people come together to act as building blocks for these temporary monuments to teamwork and cooperation. #ourHOME #OneStrangeRock is now streaming on Disney . Stream the #ourHOME collection all month long. | National Geographic History

Australia has a rich history of success at the IAAF World Championships, and with the countdown to #Beijing2015 next month continuing, we today celebrate Australia’s four male world champions. For the #greenandgold, it all began with ROB DE CASTELLA in 1983. It was the first ever world titles to be held, and it was ‘Deek’ who reigned supreme in the marathon in a time of 2:10:03. It would take nearly 20 years for DMITRI MARKOV to add to the Australian men’s gold medal tally in 2001, before NATHAN