Who are these '11,000 Concerned Scientists'?
This list contains plenty of "experts" who have zero credibility on the topic of climate change, coming from fields such as infectious diseases, paleontology, ecology, zoology, epidemiology and nutrition, insect ecology, anthropology, computer science, OB-GYN, and linguistics. Bluntly, and no offense intended, I could not care less what a French professor or a zookeeper thinks about climate change - let alone allow him to tell me how to live my life.
Scientists,
with few exceptions, are subject matter experts in specific fields - their
expertise isn't inherently relevant and extensible across varying fields of
science. For example, a physicist won't teach a graduate-level
course in biology, a podiatrist won't perform open heart surgery, and a
botanist has minimal insight on quantum computing.