Jeff Goodell

The end of coal in Appalachia doesn't mean that America is running out of coal (there's plenty left in Wyoming). But it should end the fantasy that coal can be an engine of job creation - the big open pit mines in Wyoming employ a tiny fraction of the number of people in an underground mine in Appalachia.

Americans don't pay much attention to environmental issues, because they aren't sexy. I mean, cleaning up coal plants and reining in outlaw frackers is hugely important work, but it doesn't get anybody's pulse racing.

With so much at risk, you might expect Australia to be at the forefront of the clean-energy revolution and the international effort to cut carbon pollution. After all, the continent's vast, empty deserts were practically designed for solar-power installations.

I'm the only candidate which has a policy about how to bring economic opportunity - using clean, renewable energy as the key - into coal country, because we're going to put a lot of coal miners and coal companies out of business.