
Volcanos, earthquakes, hurricanes and the ozone.

Traversing, by rope, Boiling Lake on the Caribbean island of Dominica, a waterfall-fed lake of boiling water.

Volcanos, earthquakes, hurricanes and the ozone.

Featuring a full-length exploration of a major hurricane making landfall in Florida or the Carolinas.

Miners in Chihuahua, Mexico, discover a chamber filled with blue and pink crystals, some as big as 60 feet long; as temperatures run to 150 F, with 100-percent humidity, the authorities are only opening up the cavern to scientists and film crews.