This one kind of slipped by me, but Greenpeace UK did a cool thing a couple days ago. The set up booths at airports and gave away free train tickets.

Over the past hour or so, impromptu ticket exchange booths have been appearing in airports across the UK.

Greenpeace volunteers (fetchingly dressed as stewards and stewardesses - pics here) have been offering BA passengers checking into domestic flights climate-friendly train tickets.

It's not just because we're generous souls - it's also because flying causes 10 times more damage to the climate than taking the train. And it's responsible for 13 per cent of the UK's impact on the climate (that's the government's own figures).

Read more in their blog here. Some people made complaints in the comments about train prices and how difficult it can be to book tickets. I can sympathize, but as Greenpeace web editor Bex points out:

One of the routes we were giving out tickets for yesterday was Heathrow to Manchester, (there are over 30 flights a day between Manchester and Heathrow). The train tickets normally cost £59.50 for a two and-a-quarter hour journey; a BA walk-on ticket costs a lot more and, city centre to city centre, takes longer. There are actually quite a few domestic routes on which, outside of peak hours, getting the train is around the same price as (or cheaper than) flying and takes around the same amount of time, city centre to city centre.

So next time you're thinking of flying, just check on the rail option. Might find yourself saving time, money and the climate all together.

In other flying climate news, MSN climate blogger Kate has a post questioning airline companies new found environmental credibility. Reporting that one even has the slogan, "Saving the planet, one A380 at a time". Hmm. Don't think so. We're all glad to see improvements of course, but my advice remains... If you can, take the train or stay put.