There’s more to stringing pearls than just pulling thread through holes. Most pearls, including the best imitations, have knots between them. “The knots,” says Magdalena Berg Osherenko. It’s all in ...
Copper and lutetium metal ions chaperone this molecular strand into a three-twist knot. Credit: Credit: Stuart Jantzen, Biocinematics It’s annoyingly easy to tangle your headphones into a mess of ...
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