Wild bees trundle through the allotment garden in the morning sun, the cherry tree is a blaze of white. At the back of the freshly created pond, dragonflies are buzzing over the water, and young spinach is already sprouting up in the raised bed. Sophia Engel kneels with a trowel under the small willow, yellow buttercups and grape hyacinths grow underneath. "People keep stopping at the garden fence to see what we're doing here," says the biologist and deputy head...
