with nature. not only because we have the moral duty to co—exist with the diversity of life but because we understand that nature is indispensable for our wellbeing, economy, survival and happiness and safe future, so it is a sombre moment but as you say earlier say it moment but as you say earlier say it moment to celebrate and extraordinary man and extraordinary life and extraordinary contribution. marco, thank you very much for your time today. the actor will smith has issued a full apology to the comedian chris rock, for slapping him during the oscars awards ceremony. the on—stage violence — prompted by a joke about the star's wife — was seen live by millions of people around the world. our correspondent, david willis, reports. to do what we do, you've got to be able to take abuse, you've got to be able to have people talk crazy about you.