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Twenty years ago yesterday, a book was published that changed many of our lives forever. That book was Harry Potter and the Philosopher's Stone, later renamed Sorcerer's Stone in the US. It was our first taste of a wondrous world of witchcraft and wizardry that has inspired billions around the world. Here's how that happened to me.

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Humans may have big, bulbous brains, but when it comes to pure muscle power, we're often considered the weakest of the great apes. Even chimpanzees, who are significantly smaller than us, exhibit levels of strength that are practically super-human by our standards. New research shows the degree to which our primate cousins are stronger than us — and why their tiny bodies pack such an impressive punch.

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The Disney fan army can't get enough of Mickey Mouse and his magical empire. That's why its no surprise that someone spent $US708,000 ($933,465) on a hand-drawn map of Disneyland in California, conceived by none other than the MickeyMaster himself, Walt Disney. Disney and artist Herb Ryman drew the map one weekend in 1953 as part of a presentation for investors — now, the priceless piece of history will sit in someone's living room, presumably surrounded by Thomas Kinkade paintings and Epcot souvenirs.

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There are a few reasons to be bullish about augmented reality. It's just neat is the most important reason. Its practicality is another great factor. But above all, the fact that Apple is about to unleash its app developers to go crazy with AR in iOS 11 means that a ton of content should be coming. This humble measuring tape app is just the tip of the iceberg.

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Beep beep. South Korean researchers say that the new car horn they've developed is equally effective at alerting anyone within audible distance, while being less painful for the delicate ears of motorists and nearby pedestrians. Oh, and it sounds like a duck's quack.

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We've known since the beginning of the year that there's going to, finally, be a new Ford Ranger coming to the U.S. market by 2019. The Ranger has been alive and well overseas, but that's not the one that will be coming here. We'll be getting an all-new Ranger, and, based on what we can tell from these spy photos, there will be a Raptor version of the Ranger as well.

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The search for raw materials to feed the all-powerful Sarlacc of capitalism is pushing industries to increasingly remote and alien environments. One of the most exciting frontiers to emerge of late is the deep ocean — rife with valuable metals such as copper and zinc, as well as the rare Earth elements that drive our smartphones and computers. But as humanity's interest in plundering the deep of its riches heats up, scientists are warning that this new gold rush will have serious consequences.

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Harry Potter turned 20 yesterday. (Technically, because of how the publishing world works, Harry Potter and the Sorcerer's Stone turns 20 next year, on September 1, when the US version came out.) Pottermania is so well-entrenched that all you need to see is a red and gold scarf to instantly know a lot about the person wearing it. Hogwarts is the preeminent fictional school.