The potential climatic warming effect of carbon dioxide was understood by the late-1800s.
In total, $150 billion has left Canada from 2014 to 2018.
The United States is the exception among developed countries.
The Ecofiscal Commission says carbon taxes must rise to $210 per tonne of greenhouse gas emissions.
The economic cost of limiting global warming to 2 degrees Celsius would probably exceed the benefits.
Some computer models predict catastrophic results, other projections are much more benign.
Recently, city councils in North Vancouver and West Vancouver declared a “climate emergency.”