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HISTORY Decoding the Heavens by Jo Marchant I magine if Howard Carter had opened Tutankhamen’s tomb and found an internal combustion engine inside. That’s the sort of surprise scholars received when they realised what had been hauled up from a Mediterranean shipwreck in 1901 and left in a cigar box in the storeroom of a Greek museum. Amongst the treasures of one of the richest hauls of ancient Greek statues ever found was what appeared to be a corroded lump of bronze. It turned out to be an intricately constructed mechanical device, an analogue computer, the world’s oldest surviving machine. The Antikythera mechanism, as it became known, was more than 2000 years old. As New Scientist‘s own Jo Marchant exp- lains in Decoding the Heavens, it would be at least 1000 years before anything of similar complexity came along. Who could have built such a machine? What was it for? Why has the technology lost? Far from being a hunk of junk, this was the most important artefact yet found from ancient Greece. Marchant answers these questions, and blends the story of the Antikythera mechanism, the people bewitched by it, the 100- year race to understand it, with the history, chemistry, archaeo- logy, astronomy, engineering behind it. The account is sprinkled with the magic dust of an Indiana Jones adventure.Many of the characters we meet along the way, Marchant tells us, are infec- ted with the Antikythera bug, and it’s clear that she has been too. Arthur C Clarke – who endorsed this book before he died – was an early victim of the Antikythera bug. Clarke bemoaned the fact that its secrets had been lost. If only they hadn’t, he said, the Industrial Revolution might have started more than 1000 years ago. By now, he said, “We would not merely be pottering around on the Moon. We would have reached the nearer stars. The first Apple computer T he two Steves attended the Homebrew Computer Club to- gether; a computer hobbyist group that gathered in Califor- nia’s Menlo Park from 1975. Woz had seen his first MITS Altair there - which today looks like little more than a box of lights and circuit boards - and was inspired by MITS’ build-it-yourself approach (the Altair came as a kit) to make something simpler for the rest of us. This philosophy continues to shine through in Apple’s products today. So Woz produced the the first computer with a typewriter-like keyboard and the ability to connect to a regular TV as a screen. Later christened the Apple I, it was the archetype of every mo- dern computer, but Wozniak wasn’t trying