The spilling fields

As we watch the worst environmental disaster in US history unfold, it's worth comparing with our own gusher in the Timor Sea last year. The Montara well leaked uncontrollably for over 70 days before it exploded in a fireball incinerating the rig. With the findings of a Commission of Inquiry into the Montara spill still locked down by the Gillard government, will we ever know the true environmental impact? Reporter, Wendy Carlisle.