Heritage Mariner and Greenbaum International have financed an ecological experiment to prove how swiftly rubbish can foul the oceans by dropping and tracking a plastic bottle into a Tokyo river. Filled with lottery tickets for extra publicity - one of which could be worth $55 million - Robin Mariner and Nic Greenbaum's only child, Libby, will race each other across the Pacific to see who can reach the bottle first, but when it is discovered that it...