In Netflix's 3 Body Problem – based on Liu Cixin's sci-fi novels – the drama is inspired by a real scientific conundrum in astronomy. Mathematician Kit Yates explains. What links Sir Isaac Newton, ...

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Plastic is really useful and we use it every day. But what happens after we throw it away is causing a big problem for our planet. It's thought more than five trillion pieces of plastic are in the ...

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Since the dawn of the space age in the 1950s, we have launched thousands of rockets and sent even more satellites into orbit. Many are still there, and we face an ever-increasing risk of collision as ...