There was a report in the Guardian, a while ago, about how the number of insects had halved in the last several decades. For example, there are fewer insects plastered over windscreens than there used to be. I did wonder about this a little, because I hardly ever see any flies in my flat. I used to see quite a few of those harlequin ladybirds, but I don't see any of those any more. I suppose you would not see many insects in a 4th floor flat in the middle of town, compared to the countryside, but still I have noticed the absence. When I was a lad living in surburbia, there would often been bluebottles or wasps buzzing around. When I went on my summer holidays to rural Ireland, the air would be thick with them, even the local shops. My best mate, who is now a pest controller, says his business is suffering because there has been so few wasps' nests this summer. Is this something we should be worrying about? What's the cause, pesticides, hedge removal, climate change, invasive species?