Geology

NOVA
Treasures of the Earth: Gems

 

Gemstones like diamonds, rubies, opal and jade are some of Earth’s ultimate treasures. Delve into the depths to discover how these precious stones are forged and what explains the unique allure of each captivating gemstone.

 

 

 

NATURE
Living Volcanoes

NATURE: Living Volcanoes

 

Volcanoes are the portal to the earth’s fiery magma heart; one might imagine that life above ground would avoid living nearby. But a surprising number of animals survive and thrive alongside them. Right now, in any 24-hour period, some 30 volcanoes are erupting on our planet. This film will uncover the varied activity – both human and natural – that occurs on the slopes of active volcanoes. All life on Earth owes itself to their existence. Volcanos create the land we live on, emit gas that forms the air we breathe, spew minerals from the center of the Earth and make homes for spectacular natural history – they are the source of life.

 

Preview

 

 

 

NOVA
The Next Pompeii

NOVA: The Next Pompeii

 

Discover Campi Flegrei, a lesser-known volcano in the shadow of Vesuvius. If it erupts, millions of lives could be at risk. Meet the scientists exploring its geography and developing a warning system to prevent Naples from becoming the next Pompeii.

 

Preview

 

 

 

NOVA
Kīlauea: Hawaiʻi on Fire

NOVA - Kīlauea: Hawaiʻi on Fire

 

Thousands of Hawai‘i Island residents were uprooted in 2018 when Kīlauea erupted, sending rivers of lava through communities and into the ocean. This spike in Kīlauea’s activity transformed parts of the island into an inferno, spewing rock and causing massive destruction. Join scientists and locals as they head underground to investigate the geological cause of the eruption.

 

Preview

 

 

 

NOVA
Killer Landslides

 

In March of 2014, a one-square-mile field of debris slammed into the Washington state community of Oso, killing 41 and destroying nearly 50 homes in less than two minutes. Drawing on analyses of other landslides around the world, geologists are investigating what triggered the deadliest U.S. landslide in decades and whether climate change is increasing the risk of similar disasters around the globe.

 

NOVA
Sinkholes: Buried Alive

 

In Tampa, Florida, in February 2013, a giant hole opened up under the bedroom floor of Jeffrey Bush, swallowing the 36-year-old as he slept. His body was never found. Bush was a victim of a sinkhole – a growing worldwide hazard that lurks wherever limestone and other water-soluble rocks underpin the soil. When carbon dioxide in the air dissolves in rainwater, it forms a weak acid that attacks the soft rocks, riddling them with holes. Sinkholes can occur gradually when the surface subsides into bowl-shaped depressions or suddenly, when the ground gives way – often catastrophically.

 

NOVA
Sinkhole: Buried Alive

 

In Tampa, Florida, in February 2013, a giant hole opened up under the bedroom floor of Jeffrey Bush, swallowing the 36-year-old as he slept. His body was never found. Bush was a victim of a sinkhole – a growing worldwide hazard that lurks wherever limestone and other water-soluble rocks underpin the soil. When carbon dioxide in the air dissolves in rainwater, it forms a weak acid that attacks the soft rocks, riddling them with holes like Swiss cheese. Sinkholes can occur gradually when the surface subsides into bowl-shaped depressions or suddenly, when the ground gives way – often catastrophically. Sinkholes have swallowed highways, apartment buildings, horses, camels, even golfers, with monster-size holes cracking the earth from Siberia to Louisiana. With compelling eyewitness video of dramatic collapses, NOVA follows scientists as they explore the underlying forces behind these natural disasters, traveling the globe to investigate what it’s like to have your world vanish beneath your feet.