Rice field as media by Greenpeace

I saw this in mX, a free evening commuter paper a few weeks ago. 

It's a Greenpeace ad made by growing different coloured rice plants in a rice field in Thailand.

When I got off the train it struck me how inventive this idea was in comparison to most of the outdoor ads I saw in the station. It brought home a couple of points very clearly - that strong innovation was vital to stand out in the blur, and that the competitive set for ads in every market can include the best from the rest of the world.