The biggest opportunity in 2013 is in Africa. It has seven out of the ten fastest-growing economies in the world. In Nigeria alone there are 100 million people with mobile phones. In total, 300 million Africans - five times the population of Britain - are in the middle class.

One thing that I feel very, very strongly is that we talk about Islamic countries, Islamic people, Islamic leaders, as either moderates or extremists. It's almost like there are only two categories of Muslims. And actually, that doesn't show respect. It shows lack of understanding of the diversity of Muslim thought.

The two biggest threats to international security in 2013 are Iran getting a nuclear weapon, and Iran being bombed to stop it getting a nuclear weapon. Both would precipitate a long and dangerous conflict in an already unstable Middle East. Both would be a disaster.

History is information. Memory is part of your identity.

The countries in the Paris climate accord have broken almost every promise they've made, and the nation (the U.S.) that hasn't signed the treaty is doing more than any other nation to reduce global warming.

Norway is combating climate change. It's an important issue for us. And we are committed to the Paris Agreement.

I have a pretty positive view of environmental activism, but I didn't know much about the ELF. A lot of people make documentaries because they have something they want to say, but I make them because there's something I want to explore.

Energy cogeneration on Capitol Hill makes economic and environmental sense and should be pursued for those reasons.