NOVA: "VOLATILE EARTH"
PBS, 9:00 p.m. ET
This Nova look at volcanoes is divided into two hours: Volcano on the Brink and Volcano on Fire. In the first, scientists descend deep into one of the least studied volcanoes on Earth: deep in the Democratic Republic of the Congo, they climb up the cone and into the mouth of Nyamuragira. Afraid to climb it? I’m petrified to pronounce it… Check local listings.