I was out for a walk the other day and I was struck by an odd thing. It was a glorious day - as good as a day can get, and very probably the last of its type that we shall see for many a lon g wintry month around here - yet almost every car that passed had its windows up.
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All these drivers had adjusted their temperature controls to create a climate inside their sealed vehicles that was identical to the climate already existing in the larger world outside, and it occurred to me that where fresh air is concerned Americans have rather lost their minds, or sense o f proportion, or something.
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Oh, occasionally they will go out for the novel experience of being out of doors - they will go on a picnic, say, or for a day at the beach or to a big amusement park - but these are exceptional events.
By and large most Americans have grown so reflexively habituated to the idea of passing the bulk of their lives in a series of climate -cont rolled environments that the possibility of an alternative no longer occurs to them.
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So they shop in enclosed malls, and drive to those malls with the car windows up and the airconditioning on, even when the weather is flawless, as it was on this day. They work in offices where they could not open the windows even if they wanted to - not, of course, that anyone would want to. When they go on holiday, it is often in an outsized motor-home that allows them t o experience the great outdoors without actually exposing themselves to it. Increasingly, when they go to a sporting event it will be in an indoor stadium. Walk through almost any American neighbourhood now in summer and you won't see children on bikes or playing ball, for they are all inside. All you will hear is the uniform hum of air-conditioning units.
Cities across the nation have taken to building what are called skywalks - enclosed pedestrian flyovers, climate-controlled of course - connecting all the buildings in their centres.
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Now it is