Nigeria's Niger Delta is one of the most oil-polluted places on the planet with more than 6,800 recorded oil spills...But occurring over the 50 years since oil production began in the Delta, this environmental disaster has never received the attention that is now being paid to the oil-spill catastrophe hitting the U.S. Gulf coast. "The whole world is trembling..." said Ken Tebe -- a local environmental activist who is visibly shaken by what he regards as a double standard. "It's funny because we've been dealing with this problem for 50 years. I even heard BP will pay $20 billion in damages (for the U.S. spill). When will such hope come to the Niger Delta?" Tebe asked...Mutiu Sunmonu, the managing director of Shell Nigeria, told CNN the industry is committed, after any spill, to "restore the environment to its previous status." Yet...it's clear many locals don't believe the oil companies..."The truth is that the oil has not been mopped up from the soil. We have a series of spills in the Niger Delta for more than 30 years that have not been cleaned up," Tebe said. [also refers to BP, ExxonMobil, Agip, ENI, Chevron]