May's round up of images from around the Greenpeace world come from as far afield as Australia, where activists shut down a giant digger at the most polluting power station in the developed world; India, where we've been installing solar panels in schools; and Thailand, where volunteers canoed 350km to document the toxic damage being done to the Chao Praya, the country's most iconic river.

The tension built as the judges deliberated. Then at last the results were were all in and - ta-da! It was time to announce the winner of the first annual Greenpeace 'Emerald Paintbrush' award for greenwashing above and beyond the call of duty. Cue a quick roll on the drums, and step forward into the spotlight - BP!

The energy corporation with an income larger than most of the world's nation states has spent a lot of time and money restyling itself as being 'Beyond Petroleum' in recent years, but a trawl through their accounts quickly reveals just how empty that assertion really is - 'Back to Petroleum', more like it.