Of all the civilisation collapses in history, the Mayan is probably the most famous.
Entrepreneur Sir Richard Branson narrates a new recording of The Environmental Symphony by Australian composer Allan Zavod, with words by Australia's Chief Scientist Dr Alan Finkel.
Former Secretary of Defense Panetta on Iran 'You Can Create Chaos, but You'd Better Have a Plan'
The Dalai Lama has apologised for controversial comments about the possibility of a woman succeeding him.
The higher the rate, the more wonky the economy is... As a worker, you're stuffed either way.