Arizona Daily Star editorial rebuts itself

An editorial in the Arizona Daily Star (see here), reprinted from the Washington Post, whines about failure of international bureaucrats to reduce emissions of carbon dioxide.

Within the editorial are these two sentences: “Last month, the world reached another milestone that scientists and policymakers said they wanted to avoid – CO2 concentrations in the atmosphere that exceeded 400 parts per million. Scientists reckon that the last time concentrations were that high, the Earth was far warmer.”

So, why isn’t it warmer now, if carbon dioxide is the cause?  Could it be that carbon dioxide is not a significant driver of global temperature?

There is actually no physical evidence supporting the contention that carbon dioxide is a significant driver of temperature and there are some goods reasons why the planet would be better off with triple the current carbon dioxide concentration in the atmosphere, see here.