buy one get one tree

innocent drinks are running a tree-planting promotion on their large cartons - each carton has a unique code, go to their website and enter the code, and a tree is planted in a carbon-offsetting scheme by carbon clear. farmers are paid for tree survival and growth over ten years, rather than just seedlings planted, to give incentives for long-term benefits.

i'm suspicious of carbon-offsetting projects [lowering consumption is the only sure way] but this one came free with the drink, so why not.