Secrets of the Earth

Quakes can be triggered not just by forces deep within the earth, but also by giant dams and reservoirs, deep mines and the new technique of oil drilling called fracking.

The secrets behind some of the asteroids, comets and space debris that have fallen to Earth; the latest technologies to detect space objects before they strike and spacecraft designed to prevent them from attacking the planet in the future.

Sinkholes generate far below the earth's surface and are capable of opening up across more than 20% of it.

Thunderstorms create gigantic red and blue electrical shapes above the clouds; ice crystals refract light into multiple suns; rainbows appear, and every observer sees a different one.

Volcanic destruction; oxidized auto plants and overgrown homes go under the microscope; seeking to uncover the secrets of earthly repossession.

Quicksand, grabbing unsuspecting victims in a mortal grip; whirlpools, the relentless swirls of water trapping entire boats in their swift vortices; rip currents, the hidden rivers of ocean water sweeping even strong swimmers beyond the waves.

Volcanic destruction; oxidized auto plants and overgrown homes go under the microscope; seeking to uncover the secrets of earthly repossession.

Quicksand, grabbing unsuspecting victims in a mortal grip; whirlpools, the relentless swirls of water trapping entire boats in their swift vortices; rip currents, the hidden rivers of ocean water sweeping even strong swimmers beyond the waves.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

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No episode description is available yet.

No episode description is available yet.