North Korea is the errant teenage child, aren't they? Or toddler - they're holding their breath until they get their way.

Hair and make-up always helps. I did always try to be well-groomed, professional at all times. Take your job seriously - but not yourself.

I have always been appalled by the depiction of female CIA operatives.

There's a huge impact on national security and intelligence. The new normal is going to be more and more of these hacks, whether it's Target or Home Depot or the Office of Personnel Management or Jennifer Lawrence's nude photos.

Most of physics is about energy, and physicists understand inefficiencies. I wanted to write a book about our energy options in a neutral, human-accessible form.

I am convinced that the world-wide protests during the Rivonia trial saved Mandela and his fellow-accused from a death sentence. But in South Africa, a life sentence means imprisonment until death - or until the defeat of the government which holds these men prisoner.

For three hundred years we have had our focus on the individual. We have distinguished him from the objective world as the Middle Ages did not think of doing. We have given him the world and the universe as a playground for exploration and discovery.

In parallel with the development of my interests in technical gadgetry I began to acquire a profound love of and respect for the natural world which motivates my scientific thinking to this day.