Most people think the modern-day Ionian island of Ithaki is the location. But geologists are this week sinking a test borehole on nearby Kefalonia in an attempt to test whether its western peninsula of Paliki is the real site. The scientists hope to find evidence that the peninsula once stood proud, separated from Kefalonia by a narrow, navigable marine channel. It is only within the last 2,500-3,000 years - and long after Homer's time - that the channel has been filled in, the team contends. "We can't prove the story of the Odyssey is true, but we can test whether...