The people who live in a remote region of Ecuador are suing Chevron, saying reckless oil exploration poisoned the most important rain forest on earth. Soon, a judge in a tiny Ecuadorian courtroom will decide whether the oil company must pay as much as $27 billion in damages...60 Minutes traveled down river in search of an Indian tribe which is part of the group suing Chevron...Silvia Garrigo, Chevron's manager of global issues and policy, argues the court's expert is biased...Chevron says Texaco cleaned 162 pits. But the court expert [Richard Cabrera]...puts the total number of all waste pits at 916...[also refers to Petroecuador]