A supermarket chain???
When pediatricians report an increase in sleep disorders among children, and can peg it to anxiety about global warming, I'll give it some credence.
Since I'm familiar with your stand on the general global warming issue, geoff, I can guess your motive for posting this article: to make a case against alarmism. Even though I'm directly opposed to you about the general topic, I agree about this aspect of it.
However: your use of this particular piece seems just as 'alarmist' on your side of the issue.