NOVA
Scientists Make Rare Discovery in Active Volcano
Volcanologists visit Tofua to study the volcano’s activity.
Volcanologists visit Tofua to study the volcano’s activity.
The most explosive event ever recorded on Earth—and the massive tsunami that followed.
Marine biologists unravel how whales and their poop trap carbon and feed the ocean.
On Ancient Earth, rust deep in the oceans played a critical role in the formation of Earth
Fossils show that millions of years ago, 20-foot-high fungi grew on Earth.