These days, piracy on the high seas often involves sonar, magnometers, metal detectors and other high-tech equipment for finding and plundering sunken ships. NOVA explores the swashbuckling seafaring pirates of old and their present-day successors.

NOVA covers both sides of the stormy controversy over the Tasaday tribe. When these isolated cave dwellers were discovered in the Philippines in 1971, they were hailed as a Stone Age relic. Now, many anthropologists denounce them as fakes.