This is quite amazing and very cool. I love the fact that there are stories out there showing that we can actually make real changes and fix things.
Of course if we did not destroy things to start with we would not need to eco engineer solutions to fix them.
I think a lot of people in London just assume it's extremely dirty and polluted, mainly due to the colour I think. But it's good to read about all the work that has been done and will continue to be done on it