Trapped in the Volcano • 2020 • Four Corners

95:14

Why are bees, worldwide, facing extinction? With the tenacity of a man out to solve a world-class mystery, Markus Imhoof investigates this global phenomenon, from California to Switzerland, China, and Australia.

2014 • Environment

52:51

Their beauty has captivated us for millennia. Their cost can be extraordinary–some are even considered priceless. Precious gems like diamonds, rubies, emeralds, opal, and jade are the ultimate treasures of the earth, and each one is made from a specific–and often torturous–recipe of chemistry, pressure, and heat. The secrets to their sparkle, color, and even strength lie deep inside the gems themselves, but could they also hold clues to one of the most enduring mysteries in the field of geology? From Tiffany’s workshop in New York to the sapphire mines of Sri Lanka, from North Carolina’s emerald fields to the jade-laden Forbidden City of China.

Part 1 • Treasures of the Earth • 2016 • Environment

41:57

When a gamma ray burst from two colliding stars hits the atmosphere, the deadly radiation delivers agonizing death and immediately wipes out half the planet. How will the last remaining humans survive?

S1E7 • Doomsday: 10 Ways the World Will End • 2016 • Environment

48:03

Japan has more than 100 active volcanoes--two in particular may be on the verge of unleashing a devastating sequence of deadly eruptions and secondary earthquake activity. Join intrepid volcanologist Tom Pfeiffer's dangerous and exhilarating journey to the foot of these angry giants.

S2E4 • Volcanic Odysseys • 2016 • Environment

44:54

The Hawaiian Islands are a study in contradictions. The fastest growing islands on earth are also the fastest disappearing. Made of one of the hardest minerals, it crumbles at a touch. The world's most active volcano is nowhere near the typical volcanic regions. Geologists strive to understand these mysteries.

S1E12 • How the Earth Was Made • 2009 • Environment

48:03

Venture into the danger zone of two volcanic craters posing widely divergent threats. Hawaii's Kilauea is a shield volcano that threatens communities with its slow-but-relentless lava flow, while the Sumatran Sinabung is a stratovolcano delivering carnage via a sudden and explosive surge of superheated gas and rock.

S2E5 • Volcanic Odysseys • 2016 • Environment