The luxury effect: why you’ll find more wildlife in wealthy areas – and what it means for your health

The discovery that affluent neighbourhoods have more diversity of nature has implications for human wellbeing - and sheds light on the structural injustices in cities

For a long time, ecology tended to ignore people. It mostly focused on beautiful places far from large-scale human development: deep rainforest or pristine grassland. Then, in the late 1990s, in the desert city of Phoenix, Arizona, scientists shifted their gaze closer to home.

A team of ecologists went out into their own neighbourhood to map the distribution of urban plants in one of the first studies of its kind. Equipped with tape measures and clipboards, they documented trees and shrubs, sometimes getting on all fours to crawl through bushes under the curious watch of local people.