Cactus needles draw moisture to the plant, just like the new material draws in oil droplets from the water (Photo: Shutterstock)
When an oil spill occurs at sea, there are already a number of possible options for gathering the oil that floats in a layer on the water’s surface. Some of the oil also forms into tiny suspended droplets, however, which have proven much more difficult to gather. Now, Chinese scientists have developed what could be a solution – and it owes a debt to the humble cactus needle.
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