One of the pleasures of working at Greenpeace is having access to a truly incredible photo library and there's been more than one occasion when, looking for images to accompany a blog story, I've become lost in the wealth of powerful and affecting images.

The photographers who supply us with these photos are rewarded for their work with the occasional trophy and Daniel Beltra, who has accompanied Greenpeace campaigners on expeditions all over the world, was last week presented with the Global Vision Award for photos he took in the Amazon as part of Pictures of the Year International. He also received an Award of Excellence in the Science/Nature category for a collection from the Antarctic, taken during last year's Southern Ocean expedition on the Esperanza.

A few pictures from today's plane-top protest at Heathrow:

Hanging the banner on the tailfin
© Greenpeace

An iceberg made of hard, dense ice reflects late evening light
© Greenpeace/Cobbing

Oooh, this is gorgeous. I know some of Nick Cobbing's photographs pretty well (he's done a fair bit of work for Greenpeace in the past) but, on the advice of our picture editor, I went to have a nose around his website where he's organised some of his photos into stories.

This may still be the 'silly season' as far as our national press are concerned, but that hasn't prevented a lot of good work being achieved by Greenpeace campaigners around the globe.

Blockading incandescent light bulb manufacturing plants in India; halting a coal shipment to Canada's largest power station; protesting against the construction of a new nuclear power plant in Brazil; lobbying the Thai government to prevent them lifting a ban on GM crop field trials - these are just some of the practical steps we've been taking to help bring about the cleaner, greener world we all want to see.

Over at our international office in Amsterdam, the web team have just published the June edition of their monthly round-up of images from the Greenpeace world. Being signed up to far too many internal email groups, I get to hear about what other offices are up to, but there's nothing quite like a striking image to make events in Bali or Belgium come alive.

The tents are down, the wellies are drying out and the mayhem is over. Here are a few of our favourite pics from Glastonbury 2007 (you can see lots more on Flickr):

A big thanks once again to all of you who took part in our Glastonbury competition. Here are some of the best entries in the video section - it's a shame there could only be one winner in each category.

My birthday in the park (living with climate change...)

We asked you to create images and videos about climate change. As promised, here are some of our favourite images (make sure you check out the winners, and the wonderful animations and videos too).

Click on the images to see them in full size:

The entries for our competition to win Glastonbury tickets are in. We asked you to create images and videos about climate change, from how it makes you feel to what you're doing about it. We had around 60 entries - and the quality was fantastic! Apparently there's a lot of creative genius out there...

After a lot of discussion and deliberation here at Greenpeace HQ, we've chosen the winners:

Best image (click to see the full size):

"My machine" by Matthew. © All rights reserved.