Well, why do this? What's the point of alienating people for no reason? It's not realistic to show up with no evidence and claim that children will die horribly just to make your point.
1. Those without the prerequisites and means to access on education. (Think people with no internet.)
2. Those who are willing to consider the horror of this directly, if reminded of it.
3. Those who do not want to it to be real and refuse to educate themselves on their own accord because it would mean confronting a literal existential horror.
You're 3. as evidenced by the fact that you ask me for evidence when you could just google, and find pages like this immediately: https://climate.nasa.gov/vital-signs/carbon-dioxide/