In Paris late last year, the countries of the world pledged to reduce emissions to keep global warming “well below a 2 degree Celsius” rise in global average temperatures compared with preindustrial levels.
As an advanced economy, the US is expected to lead in making the required emissions reductions, which would be roughly 80 percent by midcentury compared with 2005. This would entail moving a large portion of US power generation off fossil fuels and shifting the majority of our vehicles to electric power. That’s a tall order.

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