Deep Water Fracking Next Frontier in Offshore Drilling

Energy companies are taking their controversial fracking operations from the land to the sea -- to deep waters off the U.S., South American and African coasts.

Cracking rocks underground to allow oil and gas to flow more freely into wells has grown into one of the most lucrative industry practices of the past century. The technique is also widely condemned as a source of groundwater contamination. The question now is how will that debate play out as the equipment moves out into the deep blue. For now, caution from all sides is the operative word.