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Climate crisis and warming waters have attracted long-toothed pufferfish to new parts of the MediterraneanFrom his deckchair, his arms thrown above his head, his feet sliding back and forth in the sand, Pavlos Beleyiannis watches his grandchildren bathe in his favourite bay. It’s

Rotaxanes are dumbbell-shaped mechanically interlocked molecules in which one or more ring-shaped molecules are threaded through a linear segment, known as the axle. To keep the ring from sliding off, two bulky groups, sometimes called stoppers, are added to the ends of the axle.