It is very possible to be a convicted moron though. Having conviction and interest don't necessarily mean you know shit about the topic.
I'm all for attacking ideas but think it is inappropriate to attack/denigrate the messenger regardless of age or mental acuity. Though in this case, her parents threw her to the wolves.
As to the message ... Of course our climate is changing, as it has since the planet was formed. But the fear mongering and claims that humans are the main cause of it, is ludicrous and has no actual scientific (observable, quantifiable, and repeatable) evidence for support. The people who benefit from declaring that man is primarily responsible for climate change include everyone funded to study it, the Al Gore types who sell carbon offsets, the sellers of "sustainable energy" that takes more energy to produce than it offsets (e.g. windmills), etc.
I'm all for us being more socially responsible and better stewards of our planet but I don't advocate using fear to manipulate and exploit. Lets continue to study and develop more efficient technologies that will reduce pollution. And, lets start with cleaning our oceans, which to me are the true tangible evidence of mans disregard for our planet. The Pacific's garbage patch is bigger than Texas!