A rose-coloured liquid extracted from a common yellow plant is helping the green economy flourish in an old Spanish mining site and naturally nickel-rich soils in Albania. It is also boosting the circular economy there and across Europe. The flower, Alyssum murale, absorbs nickel and removes pollution from the soil. Land that has for years been unsafe for people to venture onto, and perilous to grow food on, is being regained.
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