Thank you very much to Nick Ramsay for raising those issues. The first related to public transport in south-east Wales and your interest in a hub at the Celtic Manor at the new convention centre, and also ensuring that public transport is at a convenient time for people to be able to get both to and from work. I'll ask the Minister for transport to provide you with an update on the latest work regarding the south Wales metro and also thoughts in terms of public transport more widely and more imminently in the area. 

In terms of e-cigarettes, I know that reports from the United States of the cluster of serious pulmonary disease amongst people who use e-cigarettes are very concerning. However, I think that it's fair to say at the moment the exact cause of the disease is unknown. But we're very clear in Welsh Government that e-cigarettes shouldn't be used by non-smokers, they should not be used by young people. At the same time, we recognise some people have found them to be helpful in terms of helping them stop smoking, but we're very clear that evidence of the longer term health affects of e-cigarette use is currently very limited. We are working with partners across Wales to develop a shared consensus about e-cigarettes that is evidence based and I'm sure that we'll have more to say on that in due course, but in the meantime we'd certainly encourage anyone who wants to quit smoking to call our free national helpline, Help Me Quit, on 0800 085 2219. We also have our helpmequit.wales website, which you can also visit as well, should anybody be interested. 

In terms of bovine TB, I know the Minister for environment and rural affairs does provide regular updates to the Assembly on that issue and I know that she'll seek to provide a further update as and when she's able to.

And I share your enthusiasm for UN world ozone day and it certainly is an example of the power that can be drawn upon when countries work together for an important reason.