Watch NOVA S20E05
Rafting Through the Grand Canyon
NOVA covers scientists on the brink of a sputtering, shaking, impatient volcano, trying to forecast when it will go off. When it does, Mt. Pinatubo in the Philippines goes big time, producing the largest volcanic eruption in 80 years.. You can watch NOVA S20E05 here.
Air date: October 27, 1992 on PBS at 9:00 PM
Watch NOVA S20E05 online
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Watch NOVA S20E04 - Search for the First Americans
Season 20 Episode 4
Air date: October 20, 1992 on PBS