Attention Richard Black? Something else to blame on CO2?

Discovery News, the Discovery Channel's news website, has an article that begins thus:

'Could Air Pollution Be Making Us Fat?

A hypothesis proposes that rising levels of CO2 in the atmosphere may be contributing to obesity.

Steadily rising levels of carbon dioxide in the atmosphere may be affecting brain chemistry, increasing appetite and contributing to the obesity epidemic, according to a new hypothesis, which still awaits rigorous testing and inevitable debate.

The idea proposes that breathing in extra CO2 makes blood more acidic, which in turn causes neurons that regulate appetite, sleep and metabolism to fire more frequently. As a result, we might be eating more, sleeping less and gaining more weight, partly as a result of the air we breathe.

Major studies are in the works to test the hypothesis, which is still very much in the what-if stage. But if the link pans out, the research would offer yet another reason to reduce the CO2 we produce, while also potentially inspiring new obesity treatments.'

I think the key words in that report are 'could' and 'may' but I am sure some scaremongering is well in order. However I doubt that Richard Black would be approving of the line that reads:

'a new hypothesis, which still awaits rigorous testing and inevitable debate.'

Ridiculous, where would be if CO2 scares were subjected to rigorous testing?