Sandy was a climate change warning. Obama must now take the stage and fulfil the promise of hope the world needs.

One of the things that I noticed with my own eyes was Nelson Mandela ability to engage with kings and queens and heads of state on the one hand, and his ability to engage with ordinary people, equally comfortably.

Nelson Mandela was just a human being, a person like other people, and everyone relaxed. Within a minute, that sort of thing about the leader and the lead, the gap was closed, and that's a rare thing.

My final advice for young people is to not wait for leadership from adult politicians. Step forward today, because our current leaders are denying the dire reality we are facing. Leadership can come form anywhere.

Nelson Mandela once said "I can't help it if the ladies take note of me; I'm not going to protest."

The reality is today most of our political leaders want to be treated as gods and semi-gods, from the security details to the fuss around them and so on.

Investing one cent more in oil, coal and gas is investing in the death of society, and the in the death of our children.