This all started April 20, after the giant oil rig, the Deep Water Horizon, exploded and sank just off the Mississippi Delta.

Eleven people are presumed dead and the cause of the explosion is still unclear. Now, fifteen hundred metres below the surface, the drilling pipe is gushing in two places, and the expanding slick can reach the coast line if the crews can't get the leak under control. If that happens, it would devastate the local ecosystem, which is home to shrimp, dolphins, manatees, oysters, whales and is right now the nesting ground for thousands of birds.

If it reaches shore it will be an environmental catastrophe.

Follow our coverage of the efforts to contain the spill. Watch the videos to the left, and follow us on twitter, where Daily Planet producer, Agatha Rachpaul, is tweeting from the location.