Letter: Zundel wouldn’t know a consensus if it hit him in the face

Editor:As a scientist, I wish to dispel Aaron Zundel’s fictitious statement (“An inconvenient truth about ‘An Inconvenient Truth,'” March 1) that “the causes of global warming?are still up for debate.” Zundel cites 60 “scientists from universities and institutions across the globe” who are critical of the idea that global warming is human-induced. The Intergovernmental Panel on Climate Change (IPCC), consisting of hundreds of experts, states: “Global atmospheric concentrations of (greenhouse gases) have increased markedly as a result of human activities?Most of the observed increase in globally averaged temperatures?is very likely (less than 90 percent probability) due to the observed increase in anthropogenic greenhouse gas concentrations.” Scientific societies whose members study climate agree: “Human activities are increasingly altering the Earth’s climate?Scientific evidence strongly indicates that natural influences cannot explain the rapid increase in global near-surface temperatures observed during the second half of the 20th century.” This represents the consensus view of the American Geophysical Union’s 45,000 members.As with any issue, it is easy to find a skeptic. But the majority of scientists–hence, the consensus-agree that global warming is anthropogenic. Perhaps Zundel should take his own advice and avoid being “ignorant and irresponsible” by including “flawed or incomplete science” in his opinions. Michael DavisGraduate Student, Geophysics