On a remote and windswept island some 700km south of New Zealand, grows the world's loneliest tree.
Green, bushy, large — as trees go, it's pretty unremarkable.
Sitting in the middle of the permanently uninhabited subantarctic Campbell Island, the nine-metre-tall Sitka spruce is 250 kilometres away from its closest companion. In fact, it is the only tree on the island.
