Self-proclaimed climate “skeptics” like to claim we’re near record-low CO₂ levels.
In reality, CO₂ is now around 430 ppm - 2.5× the record low (~170 ppm) and over 50% above pre-industrial levels (~280 ppm).
And it’s rising faster than at any point in this 800,000-year record.
ALT CO2 concentrations over the last 800.000 years, going back to well before the human species existed.
We are nearing 430 ppm, well above the record low of ~170 ppm, and the 280 ppm before the pre-industrial revolution.
Also note the rate of change.