From the late 1940s, into and through the '50s, there developed a complex interaction between federal government, state and local government, real-estate interests, commercial interests and court decisions, which had the effect of undermining the mass transit system across the country.

Any little issue - Miss Universe, or whatever it may be - [Donald Trump] is completely unpredictable, he'll go off into outer space.

Remember that in any major nuclear war, the first strike destroys the country that attacks; it's been known for years. The first strike of a major power is very likely to cause what's called nuclear winter, leads to global famine for years and everything's basically gone. Some survivors straggling around. Could [Donald Trump] do it? Who knows.

One substitute for the disappearing Evil Empire (The Soviet Union) has been the threat of drug traffickers from Latin America. In early September 1989, a major government-media blitz was launched by the President. That month the AP wires carried more stories about drugs than about Latin America, Asia, the Middle East and Africa combined. If you looked at television, every news program had a big section on how drugs were destroying our society, becoming the greatest threat to our existence, etc.

[Donald] Trump has been very inconsistent on many things; on Twitter he's been all over the place, but some of it is very consistent. That is: Do nothing about climate change except make it worse. And he's not just speaking for himself, but for the whole Republican Party, the whole leadership. It's already had impact, it will have worse impact.

Bradley Manning should be regarded as a hero. He is doing what an honest, decent citizen should be doing: letting your population know what the government, the people who rule you are doing. They want to keep it secret of course.

There is little doubt that a significant part of any serious solution will require advances of technology, but that can only be part of the solution. Other major changes are necessary.