Friends of the Earth is teaming up with the Prince Charles Cinema for a series of special showings of An Inconvenient Truth.
Each screening will give you the chance to quiz a leading politician on climate change.
The next screening is on Monday 19th March at the
Prince Charles Cinema, just off Leicester Square, London.
Liberal Democrat Leader Ming Campbell will be there to take your questions on climate change.
We've got a pair of tickets to give away. If you fancy coming - tell us what
you'd like to ask Ming Campbell in a post below.
We'll let you know if you've won by email on Friday 16th.
PS. If you can't make it but still want to enter - just add "can't make it" to your message. If you win - we'll have rummage in our goodie box and send you something by snail mail.