It is estimated that 55% of the global population lives in urban areas, and that number is expected to rise to 68% by 2050. This expansion of urbanization is severing our connection to the natural world, but ‘rewilding’ is a concept that can bring nature back to our cities by creating more green areas with native plants and trees. Perhaps the most famous rewilding project is the High Line in New York City. In 2009 an old train track on the west side of Manhattan was repurposed as a beautiful walkway for the public. This continuous 2.5 km greenway features more than 500 species of plants and trees. It is a shining example of how abandoned spaces in cities can be totally transformed to connect people with nature.

The concept of rewilding is centred on creating expanded green spaces in urban areas, but also seeks to restore natural habitats that were once diverse ecosystems. Many studies are showing that rewilding is also very beneficial to our health and wellness. Research at the University of Exeter (UK) confirmed that spending time outdoors in nature provides mental and physical benefits. Even taking just a short walk in nature makes people feel more grateful, joyful, and compassionate. A study from the University of California shows that the positive emotions we feel when connected to nature make us healthier by reducing stress.

Rewilding projects are springing up around the world. In Miami (US) the first phase of the Underline Park has been opened under the metro line. It is inspired by New York’s High Line, and it will eventually become a 16 km green urban trail with areas to display public art. Here in Europe, the Nottinghamshire Wildlife Trust (UK) is aiming to make Nottingham the country’s first “rewilded city”. In Germany, several cities are establishing wildflower meadows in order to boost plant diversity and attract endangered pollinating bees. Barcelona plans to build beehives throughout the city, along with nesting towers for bats and birds.