BBC WORLD Climate Watch

Hello, I'm David Shukman, environment and science correspondent on BBC World. For four weeks we'll be showing a series of programmes about climate change, ahead of a special Climate Watch season beginning in April.

I made the long journey to Antarctica, travelled to the heart of the Amazon and ventured deep into the Russian Arctic Circle. And, for the last of BBC World's climate documentaries, my colleague Roger Harrabin visited a country that may suffer more than most from the effects of global warming ?Bangladesh.

In April BBC World is launching Climate Watch and YOU have the chance to be involved. Climate Watch will look at the changing face of our planet and if you have photos or video clips with examples or personal images that capture the changing world around us we like to see them. It could be images from the past, maybe of your parents in the same area, or even your grandparents - how has the environment changed since their day? Or maybe pictures of a tree blossoming unusually early, or a river running dry or some other unexpected change in the world around you.