Three questions regarding volcanoes are posed to a volcanologist. The questions are: can a human do anything to make a volcano erupt?, is "volcanologist" spelled with a "u" or an "o"?, and what is your favorite volcanic eruption of all...

This video segment adapted from NOVA relates the dramatic story of vulcanologists trying to predict the timing of the cataclysmic eruption of Mount Pinatubo in the Philippines. Essay and discussion questions as well as related links follow.

Animation explores how basin and range processes can lead to four types of volcanic eruptions. [1:10]

View an eruption from deep ocean volcano.

Dangerous rain induced landslides are explained and presented in this weather oriented National Geographic Video. [3:46]

Some volcanoes experience a large number of pre-eruption earthquakes.