Despite the frequent use of coal miners as a potent political symbol, coal jobs are disappearing - and they're not coming back.
I think Donald knows climate change is a serious threat - but he only cares about protecting his luxury coastal properties, not the rest of America. Observing his actions as they relate to his business interests offers the best insight into the man behind the bluster.
The tech-driven economy leads to a two-tier job market where workers are either critical or 'commodity.' This divisive 'winner-take-all' mentality hurts most Americans and worsens economic inequality.
Faced with global challenges, politicians like Donald Trump have played on the fears and concerns of the American people with divisive, hateful rhetoric and proposals.
Some members of the ruling class are making a concerted effort to expand the wealth gap.
We need to ask elected officials supporting Keystone XL whether they're willing to put their constituents and our environment at risk so that foreign oil tycoons get a better return on their tar sands investments. Keystone XL backers will keep trying to sell us a sucker's deal; it's up to us to say no.
I am a true believer that we have to change the way we generate and consume energy in the United States.
Tar sands oil is dirtier, more corrosive, and worse for the environment than conventional oil.
In the presidential debates back in 2008 and 2012, the candidates clearly didn't know how to make climate change resonate with voters - if they mentioned it at all.
Breaking of norms and disregard for decency have huge, long-term costs.
I've always said that climate change is the defining issue of our generation. I've set out to hold candidates and elected officials accountable and to push our democracy to truly represent the interests of our kids.
We believe the way social change occurs in the United States, over the last 200 years, is the democratic process.
To say Donald Trump would be a disaster for our country, our democracy, and our future would be doing a grave disservice to the word 'disaster.'
That is not something I embrace. I think there are real distinctions between the Koch brothers and us.
Donald Trump may be unusually flamboyant, but his views are all too representative of the party that is about to nominate him for president.
The dialogue around climate change can often become mired in gloom and doom, which is understandable given the topic.
Climate change is a global crisis - one the international community and private sector must tackle together if we have any hope of averting the worst impacts on our health, our economies, and our communities.
We eliminated the monarchy. We put limits on how long one person could lead our country and on the powers they held while in office. We took differences of opinion seriously - in fact, we built them into the fabric of our government.
For years, TransCanada has been selling the Keystone XL pipeline to Americans with all of the enthusiasm of a used car salesman - and using all of the same tricks. However, one myth is more egregious than all the rest: this pipeline will enhance America's energy independence.
Only when the oil and gas industry has taken full account of, and responsibility for, the impacts of exploring for and extracting fossil fuels can we engage in a serious and worthy evaluation of whether fracking can indeed provide a bridge to a sustainable energy future.