It's been another big year for Greenpeace around the world, culminating in the Copenhagen climate summit. Take a look back on some of our best images and stories from 2009.

Two years have passed since world leaders promised all of us a deal to stop climate change. After two weeks of UN negotiations, politicians breezed in, had dinner with the Queen and then failed to deliver any meaningful action on climate change.

As we all try to come to terms with the historic failure of nerve and vision that paralysed the Copenhagen climate summit, the response of Greenpeace members around the world has been fast and focused: expressing their condemnation of world leaders unwilling or unable to lead in a time of crisis, and demanding the release of the four Greenpeace activists who face spending Christmas in jail after making a peaceful protest at the Danish Queen's dinner for Heads of State.

Copenhagen

Over 100 Greenpeace staff and supporters held a candle-lit vigil outside Vestre Fængsel prison, Copenhagen, where four of our activists face spending Christmas in jail - held in isolation and without trial. Three of them took part in the peaceful protest at the Danish Queen's Heads of State dinner during the Copenhagen Climate Summit.

A round-up of August's images from around the Greenpeace world.

More breathtaking images just in from Nick Cobbing, aboard the Arctic Sunrise in Greenland, where the crew are working with leading climate scientists to monitor the break-up of the Petermann Glacier.

This month's round-up of images from around the Greenpeace world.

A round-up of June's most compelling images from Greenpeace actions around the world.

The Arctic Sunrise is still in Greenland where the crew (including leading climate scientists and other ice experts) have been monitoring the ongoing disintegration of the Petermann glacier.

Photographer Nick Cobbing is on board, and we've all been oohing and aahing over his stunning images as they come in to the office. They're all the more poignant as the portion of the glacier they depict may soon cease to exist. 

You can view a larger version of this slideshow, and follow updates from the Arctic Sunrise on the Climate Rescue blog.

There are a lot of tired but very happy (not to mention sun-kissed) people around the office today. Those who manned the Greenpeace field at Glastonbury are reappearing and they have such tales to tell. (I would have asked one of them to write this update, but they're all worn out.)

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.