Ending use of coal, oil and gas is essential in tackling climate crisis – but even talking about it is controversial Ending use of coal, oil and gas is essential in tackling climate crisis – but even talking about it is controversial Coal, oil and gas are at the heart of the climate crisis: burning them produces carbon dioxide, and that is heating the planet, so far to 1.5C above preindustrial levels, and in future perhaps to more than 2.5C, a level that would lead to widespread and