But Edison was working on something useful.
The physics of greenhouse gas molecules limits the amount of temperature rise that CO2 can cause to a small amount, most of which has already been realized. That’s because of the ‘saturation’ effect of energy flow from overlap of absorption-emission spectra of carbon dioxide and the most common greenhouse gas, dihydrogen monoxide (water vapour).
Reality is that the climate is not warming at an alarming rate, and sea level is not rising at a rate significantly faster than it has been since the end of the long cool period around 1750AD. (See PSMSL.org for government databases.) Records of surface temperatures are incomplete and contain unexplained ‘adjustments.’ I’ll instead go with traditional weather balloon thermometers and satellite sensors. Climate was stable during the Medieval Warm Periods when Vikings farmed southwest Greenland.