Overextended on Our Ecological Credit Card

Just as the global economy is recklessly burning up wealth, the world's population is burning up natural resources. The World Wildlife Fund, the Zoological Society of London and the Global Footprint Network are reporting today that human demands on natural resources are over-reaching what Earth can sustain by almost a third. They call it a kind of global recession. James Leape, Director General of World Wildlife Fund International, has more on the "ecological credit crunch."