Your absolutely correct. CO2 is NOT dangerous, well I know who to ask, your brave Submarine Navy, who allow CO2 to reach levels of 8,000 - 12,000 part per million.  I would also ask your previous Apollo astronauts if they consider 400ppm dangerous level of CO2.  If people will take time to check these facts, they will also find many astronauts that see through all this alarm, including Buzz Aldrin, who is a sceptic, a rational man.  Its frightening to see how engrained this is becoming to kids. This is what Al Gore was aiming for with his mockumentary. It was aimed at parents, but the kids, at least in the UK where I am (Wales) were able to see it in their classrooms.  Gore ensured a copy went free to each school in England & Wales, it was designed cynically, to hook the kids early, so that they could carry the belief forward.  Gore also knew that kids would then convince their own parents to make changes and buy into "Saving the Planet for the Kids Future".