We’ve smelted a billion tonnes of recyclable aluminium. Do we need to make more?
By Guy Keulemans, UNSW Aluminium is light and versatile, but massively energy-intensive to produce, requiring 10% of Australia’s entire electricity output . Recycling it uses just a fraction of the energy. Why aren’t we closing the loop? This metal – the most abundant in the Earth’s crust – is used in everything from kitchen utensils…