How did our relationship with nature become broken, why does it matter and how can we fix it? From a past in which we were embedded in the natural world, revolutions in farming, science and industry have seen the human bond with nature eroded with the promise of prosperity offering happiness and meaning in life. This mindset may have delivered comfortable living for many, but there is growing recognition that the root cause of wildlife loss and the warming climate is people's disconnection from nature, which is also an important factor in our mental health. Yet solutions focus on technical fixes to treat the symptoms of that damaged relationship, such as reducing carbon emissions and increasing habitat. What we urgently need is a whole new way of thinking.