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The winter of 1917, the North-East front, the final clashes of the Great War. An Italian stronghold situated at 1800 metres above sea level, on the Asiago plateau, described in the novels of Mario Rigoni Stern. It’s snowing everywhere| the Austrian trenches are so close that you can hear the enemy soldiers breathing. A hundred years since the outbreak of World War I, maestro Er...。In 2014, the International Space Station had to move three times to avoid lethal chunks of space debris and there is an increasing problem of satellites mysteriously breaking down. With first-hand accounts from astronauts and experts, Horizon reveals the scale of the problem of space junk. Our planet is surrounded by hundreds of millions of pieces of junk moving at 17,000 miles...。