london. and welcome to the amanpour hour. in the next 60 minutes we will take you around the world to ask the tough questions and tackle the problems and let history be our guide. here is where we re headed this week. no more excuses. the australian billionaire turned eco warrior who says it is do or die if we are to save the planet puts his money where his mouth is. the science is not in any debate by anyone with half a brain, so we must change. then to the violent epicenter of the middle east, a professor how america took its eye off the ball at just the wrong time. i really have no trust in american foreign policy. also ahead, no cell silencer, an exclusive interview with the family of the iranian nobel winner. and then from the archive, grappling with nelson mandela s legacy, a decade after his death. and finally, to the moon. for a story of hope and humanity, with tom hanks. all we really need is enough of us to work together and we can truly change the wor