As urban expansion quickly replaces natural habitats, façade engineer Alistair Law has discovered a new way to restore native ecosystems for pollinators and create natural spaces for us all within cities – by turning the walls of buildings into meadows.

Alistair is joined by Scarlett Weston of BugLife at a vertical meadow in full bloom in downtown London. She’s monitoring bees visiting the meadow, and hopes more pollinators will use these sites as stepping stones across the city, helping to bridge gaps along larger corridors she’s establishing across the UK.