97 percent of the scientists who wrote articles in peer-reviewed journals believe that human activity is the fundamental reason we are seeing climate change.

I believe strongly that we can protect our people without undermining our constitutional rights and I worry very, very much about the huge attacks on privacy that we have seen in recent years - both from the government and the private sector. I worry that we are moving toward an Orwellian society, and this is something I will oppose as vigorously as I can.

What the American people want to see in their president is somebody who not necessarily can win every fight, but they want to see him stand up and fight for what he believes, take his case to the American people.

I think it is now widely understood that the so-called "War on Drugs" has largely been a failure. Too many people have developed criminal records for smoking marijuana. Too many people have gone to jail for nonviolent crimes. So I think it's important for us to rethink the war on drugs.

In terms of media, we did not get the kind of media attention that somebody like a Donald Trump got, because media is not necessarily interested in the issues facing the middle class, more interested in attacks in personality. So I think there were a lot of reasons.

The focus, to my mind, is to make sure that Donald Trump does not become president of the United States. I think by temperament he is unqualified to be president. I think his views - you have a guy who's running for president who rejects science, doesn't even believe climate change is real, let alone wants to do something about it, wants to give hundreds of billions of dollars in tax breaks to the top two-tenths of one percent.

The reality is we that have a corrupt campaign finance system which separates the American people's needs and desires from what Congress is doing. So to my mind, what we have got to do is wage a political revolution where millions of people have given up on the political process, stand up and fight back, demand the government that represents us and not just a handful of campaign contribution - contributors.