cannes, efforts to go green really impressed marion cotillard, who produced one of the documentaries.aries. it is an amazing thin , documentaries. it is an amazing thing. they _ documentaries. it is an amazing thing, they really _ documentaries. it is an amazing thing, they really took - documentaries. it is an amazingj thing, they really took decisions and turns that are green out, let's say it this way, and i think it is about time and it is very important that such a huge festival set an example. that such a huge festival set an examle. , ., , ., example. growing up, i never saw a clean river- — example. growing up, i never saw a clean river. invisible _ example. growing up, i never saw a clean river. invisible demons - example. growing up, i never saw a clean river. invisible demons was i clean river. invisible demons was one of the _ clean river. invisible demons was one of the climate _ clean river. invisible demons was one of the climate change - one of the climate change documentary is unveiled at the festival, with its focus on a pollution in new delhi and brought festivalgoe