These are the kinds of morons driving the CO2 narrative and Climate Change loonies listen to. From a hearing last year.
www.bing.com
It is 5 minute video so not too boring...but funny as heck.
I am a little disappointed that nobody in that group seems to have had a clue about the actual amount of CO2. And thus it is clear that they haven't actually read any of the literature with respect to what they're legislating about.
It doesn't mean that having 0.03%, 0.04%, or 0.05% doesn't make a difference. Likewise the methane in the atmosphere is around 1912 parts per billion. And, of course, chlorofluorocarbons are around 4 parts per billion.
Keep in mind that the atmosphere is about 60 miles thick. Obviously lower density at higher altitudes. And we get a lot of chances for IR emissions to encounter a CO2 molecule or methane molecule, and then get scattered in a random direction. A little makes a big difference. Of course with CO2 being heavier than O2 or N2, and thus it may not spread evenly throughout the atmosphere. I.E. more concentrated near the ground.
The lightweight chlorofluorocarbons were also very good at chewing up our ozone protection, even at seemingly very low concentrations.
Earth has a fine balance of absorbing sunlight, and emitting IR energy. Throw that balance off and we have a mess.
1°C or 2°C (2°F to 4°F) doesn't seem like a lot, but in some cases it could be the difference between snow and no snow. Or perhaps bug infestations or no bug infestations. Or Maple syrup vs bland pancakes. Or you might think of it as 90°F might be comfortable, but 95°F is not.
The impact isn't completely straight forward. While the planet is getting warmer, it is also causing changes in evaporation and rain, and changes in ocean currents. And scientists are struggling to predict the actual effect in each place with some places getting drier, and other places getting more rain. So we're not exactly headed towards a 1930's dustbowl.
Human environmental impact is complex and not isolated to just CO2. Everything from irrigation to destruction of forests. Around here, forest fires seem to be getting worse. Not just a warming planet, but centuries of forest mismanagement.
