resources
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Roads Made from Recycled Waste Could Rev up the Circular Economy
It cost A$49 million to add 12.5 kilometres of extra lanes to Western Australia’s Kwinana Highway, south of Perth’s CBD. That’s not unusual. On average, building a single lane of road costs about about A$5 million per kilometre. What is unusual about this stretch of extra freeway is not the money but the materials beneath…
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The World Is Running Out Of Gold
How much gold would you have if you stole every bit that’s ever been mined? Not much — you’d be able to make a cube of solid gold with 18m sides. There just isn’t that much gold in the world, and it’s getting harder and harder to find it. In fact, our love of gadgets…