Arabic-Web-A year on from oil spill, gulf safe but unknowns lurk

The worst US environmental disaster was predicted to take generations to repair. Now, a year later, scientists surveying the effects of the BP oil spill say things on the surface look far better than expected. But lurking beneath the waves, the impact of oil and dispersant residue on the Gulf of Mexico's fragile flora and fauna is unknown, and could take years to surface. Natural sound AFPTV report.