It's absolutely fine to think of new ways of doing things, and I'm not just asking for the traditional reporter to look into our living rooms night after night.

The BBC has the obligation to think big. And at the moment, that clarion call sounds an uncertain note to me.

The BBC produces wonderful programmes; it also produces a load of old rubbish.

Ever more people are alert to the challenge of global poverty and global warming. We know that solutions are at hand. We will not sleepwalk into catastrophe. We have the capacity to forsee and forestall, and I believe we will find the will to act

I'm not certain that the BBC can claim to be making a wide enough range of distinctive programmes to make the case convincingly.

It's absolutely fine to think of new ways of doing things, and I'm not just asking for the traditional reporter to look into our living rooms night after night.

The challenge is the culture. You have to have a vision for the BBC-it can't merely be that it's big and has a place in the market.