claim: By that time CO2 emissions had already risen from the expanded use  of coal that had powered the industrial revolution, and emissions only  increased slowly from 3.5gigatonnes in 1910 to under 4gigatonnes by the  end of the Second World War.
evidence: The widescale use of fossil fuels, coal at first and petroleum later, to fire steam engines enabled the Industrial Revolution.
category: Fossil fuel