Do those who doubt climate catastrophism lack scientific credibility?

James D. Agresti of Just Facts Daily questioned some assertions recently made by reporter Justin Gillis that scientists have affirmed that reaching the milestone of atmospheric concentration of carbon dioxide of 400 parts per million (ppm), up from 288 ppm or by 39% since the dawn of the industrial revolution in the mid-1800s:

• “feels like the inevitable march toward disaster,”
• “we are quickly losing the possibility of keeping the climate below what people thought were possibly tolerable thresholds,”
• “we have failed miserably in tackling this problem,”
• “I feel like the time to do something was yesterday,” and
• “It’s scary.”  

What concerned Mr. Agresti was that Mr. Gillis dismissed a lone dissenting voice to these scientists: Dana Rohrabacher, a Republican congressman from California, stating that “climate-change contrarians” have “little scientific credibility.” 

Not exactly.  Be sure to read the article.  You will see for yourself that nearly 31,500 professionals, including 9,029 Ph.D. scientists,and 3,805 atmospheric, earth, and environmental scientists, have signed a petition stating, “There is no convincing scientific evidence that human release of greenhouse gasses is causing or will, in the foreseeable future, cause catastrophic heating of the Earth’s atmosphere and disruption of the Earth’s climate.”

As a side note, two of the scientists who don't buy the hysterics of rising levels of carbon dioxide live in the southeast valley of Arizona:  Dr. Craig D Idso and Dr. Sherwood B. Idso.  They are the creators of C02 Science.  Dr. Sherwood Idso is also one of the signers of the Global Warming Petition Project

Jennifer Reynolds, who has a degree in environmental engineering, also lives in the southeast valley and is in the process of signing the petition.  Ms. Reynolds created Arizonans Against Common Core and the Alliance for Sustainable Freedom

 Here's a fun video that Dr. Sherwood Idso put together a few years ago about C02 levels.