Archaeological mysteries include the ruins of an oceanic kingdom that rise from the sea near Micronesia; sandstone buildings in the canyon cliffs of New Mexico; and the huge lines and geometric patterns in Peru's Nazca Desert.
An examination of cultural differences and similarities in the context of paranormal events, such as hauntings, spirit possession and psychic abilities. Included: why some societies dismiss supernatural phenomena while others embrace it.
Examining the effects of traffic in an automobile-centered society. Traffic patterns are analyzed using computer graphics, and a ride through Mexico City shows traffic problems. Also: a brief history of the traffic jam, beginning in Manhattan in the early 1900s.
Asteroids are examined, including exactly what they are and where they come from; the chances of an extinction-level impact; a meteorite hunter who makes a handsome profit; and the Near Mission, in which a probe landed on an asteroid.
Examining causes of murder using social science, psychology and biological research. Included: brain imaging techniques shed light on the “nature versus nurture” debate; genetic predisposition to violence is explored.
Examining evolution, from Darwin's theories to the Human Genome Project; and the controversies that still swirl around it. Included: the Galapagos Islands, which inspired Darwin; religious resistance to evolution; and insects that are developing resistance to pesticides.