Travel is getting easier to make green, ranging from Google's Make it a Green Summer to Fair Trade Tourism. Now one simple little thing you can do is put out ten quid to Make it a Treeflight. Buy your ticket normally, then truck over to Treeflights.com and buy a sapling for a Welsh forest - available in a variety of flavours, including willow, ash and black cherry. Black poplar gives home to over 200 insects, so while you fly, you're giving tiny fliers a new home. [GT]
Product page: Make it a Treeflight
Related stories: Fair Trade Tourism | Make it a Green Summer

Treeflights is cool! I'm flying to France next week, so i chose 3 oak trees to be planted on a wild welsh hillside. I'm going to visit them too in a few years. I'm not expecting 60 ft trees though..
check them out