This is a good story from Al Jazeera yesterday.

I’m the dour-looking egghead near the end. (I find this format difficult. You sit waiting in a dark room, facing only an unmanned camera, with a picture of the city behind you. You listen to some technical talk on a headset, and then hear some of the news story. Almost without warning, a question pops into your ear from someone you can’t see. It doesn’t bring out my smiley side.)