Guest: Kate Allen, climate change reporter Fresh air, trees, grass on bare feet. The sound of birds while playing on a playground. Leisurely swinging in the shadow of a tree. Many of us have childhood memories outside in parks and forests, and research shows this time is key to our physical, mental and social well-being and development. So what about the children being raised in urban centres like Toronto, where green space has shrunk significantly over the past two decades as the region faces pressure to build housing and city reports warn that the amount of parkland per person risks falling further. As part of the Star’s “The Kids Aren’t All Right” series, climate change reporter Kate Allen joins “This Matters” to discuss the impacts on children and their development. This episode was produced by Paolo Marques and Brian Bradley.