discuss what's happening to the weather i'm joined by mark linus and oxford he's an environmentalist and climate change author in new york we have alexander ochs director of world watches institute climate and energy program and in los angeles we cross to phelim mcaleer he's a journalist and documentary filmmaker and another member of our cross talk team and the hunger all right gentlemen crosstalk rules in effect that means you can jump in anytime you want mark and i to go to you in oxford first what the hell is going on with the weather and i say that with a great deal of passion because moscow is baking this is russia it's shouldn't be happening here at least that's what i always believed why are we having such high temperatures around the world in places which you would never expect it. well first up you've got to distinguish between weather and climate ok if we're going to look at whether we're experiencing climate change and global warming you need to bear that in mind that climate is the average of weather over a longer period so with the heat waves that we're seeing these are