studies of geological and biological information, as well as measurements of
atmospheric carbon dioxide content, indicate a sudden up turn of both carbon
dioxide and methane in the last century in conjunction with our ability to
retrieve and burn fossil fuels.
|Please note that
the increase in methane is larger than CO2 increase although the contribution
to heating the atmosphere is less. Methane is of particular significance to
Alberta and is, I believe, responsible for helping to make Alberta the number
one province in greenhouse gas emissions.