I would be absolutely astounded if population growth and industrialisation and all the stuff we are pumping into the atmosphere hadn't changed the climatic balance. Of course it has. There is no valid argument for denial.

Cameramen are among the most extraordinarily able and competent people I know. They have to have an insight into natural history that gives them a sixth sense of what the creature is going to do, so they can be ready to follow.

I had a huge advantage when I started 50 years ago - my job was secure. I didn't have to promote myself. These days there's far more pressure to make a mark, so the temptation is to make adventure television or personality shows. I hope the more didactic approach won't be lost.

I'm absolutely strict about it. When I land, I put my watch right, and I don't care what I feel like, I will go to bed at half past eleven. If that means going to bed early or late, that's what I live by. As soon as you get there, live by that time.

Each and every one of the security measures we implement serves an important goal: providing safe and efficient air travel for the millions of people who rely on our aviation system every day.

Springsteen's 'Thunder Road' and Carole King's 'It's Too Late' are examples of why I am a singer/songwriter. I practice these songs every day. The melodies are timeless in the rock world, the lyrics are words that I need to say, and they need to be heard again.

Yahoo! has clearly established itself as the go-to destination for big events and breaking news, and we are focused on providing the best digital canvas for the world's greatest storytellers to create, develop and showcase their visions.

I adore Madrid. It's my city. If I ever move, it will only be for work. Whenever I travel, I always want to get back home.