A short video of the roofscape of London from Dusty Gedge. He writes that over the last 15 years green roofs have started to flourish making a bumblebees imaginary journey through the City one of plenty. Pollination sources are starting to abound, nectar can be harvested. Whilst at the same time all these roofs will help London to adapt to Climate Change - reducing the impact of flash storms, cooling the city, reducing air pollution and making it a better place for humans too.
http://vimeo.com/59411991